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All the empathy and humility in the world will not mean much against the pressures of intolerance and tribalism without an invaluable quality that Sulzberger did not emphasise: courage.

Sulzberger seems to underestimate the struggle he is in, that all journalism and indeed America itself is in

In describing the essential qualities of independent journalism in his essay, he unspooled a list of admirable traits – empathy, humility, curiosity and so forth. These qualities have for generations been helpful in contending with the Times’s familiar problem, which is liberal bias

on their own, these qualities have no chance against the Times’s new, more dangerous problem, which is in crucial respects the opposite of the old one.

The Times’s problem has metastasised from liberal bias to illiberal bias, from an inclination to favour one side of the national debate to an impulse to shut debate down altogether

the internet knocked the industry off its foundations. Local newspapers were the proving ground between college campuses and national newsrooms. As they disintegrated, the national news media lost a source of seasoned reporters and many Americans lost a journalism whose truth they could verify with their own eyes.

far more than when I set out to become a journalist, doing the work right today demands a particular kind of courage:

the moral and intellectual courage to take the other side seriously and to report truths and ideas that your own side demonises for fear they will harm its cause.

One of the glories of embracing illiberalism is that, like Trump, you are always right about everything, and so you are justified in shouting disagreement down.

leaders of many workplaces and boardrooms across America find that it is so much easier to compromise than to confront – to give a little ground today in the belief you can ultimately bring people around

This is how reasonable Republican leaders lost control of their party to Trump and how liberal-minded college presidents lost control of their campuses. And it is why the leadership of the New York Times is losing control of its principles.

Over the decades the Times and other mainstream news organisations failed plenty of times to live up to their commitments to integrity and open-mindedness. The relentless struggle against biases and preconceptions, rather than the achievement of a superhuman objective omniscience, is what mattered

. I thought, and still think, that no American institution could have a better chance than the Times, by virtue of its principles, its history, its people and its hold on the attention of influential Americans, to lead the resistance to the corruption of political and intellectual life, to overcome the encroaching dogmatism and intolerance.

As the country became more polarised, the national media followed the money by serving partisan audiences the versions of reality they preferred

This relationship proved self-reinforcing. As Americans became freer to choose among alternative versions of reality, their polarisation intensified.

as the top editors let bias creep into certain areas of coverage, such as culture, lifestyle and business, that made the core harder to defend and undermined the authority of even the best reporters.

here have been signs the Times is trying to recover the courage of its convictions

The paper was slow to display much curiosity about the hard question of the proper medical protocols for trans children; but once it did, the editors defended their coverage against the inevitable criticism.

As Sulzberger told me in the past, returning to the old standards will require agonising change. He saw that as the gradual work of many years, but I think he is mistaken. To overcome the cultural and commercial pressures the Times faces, particularly given the severe test posed by another Trump candidacy and possible presidency, its publisher and senior editors will have to be bolder than that.

As a Democrat from a family of Democrats, a graduate of Yale and a blossom of the imagined meritocracy, I had my first real chance, at Buchanan’s rallies, to see the world through the eyes of stalwart opponents of abortion, immigration and the relentlessly rising tide of modernity.

the Times is failing to face up to one crucial reason: that it has lost faith in Americans, too.

For now, to assert that the Times plays by the same rules it always has is to commit a hypocrisy that is transparent to conservatives, dangerous to liberals and bad for the country as a whole.

It makes the Times too easy for conservatives to dismiss and too easy for progressives to believe.

The reality is that the Times is becoming the publication through which America’s progressive elite talks to itself about an America that does not really exist.

It is hard to imagine a path back to saner American politics that does not traverse a common ground of shared fact.

It is equally hard to imagine how America’s diversity can continue to be a source of strength, rather than become a fatal flaw, if Americans are afraid or unwilling to listen to each other.

I suppose it is also pretty grandiose to think you might help fix all that. But that hope, to me, is what makes journalism worth doing.

Since Adolph Ochs bought the paper in 1896, one of the most inspiring things the Times has said about itself is that it does its work “without fear or favour”. That is not true of the institution today – it cannot be, not when its journalists are afraid to trust readers with a mainstream conservative argument such as Cotton’s, and its leaders are afraid to say otherwise.

Most important, the Times, probably more than any other American institution, could influence the way society approached debate and engagement with opposing views. If Times Opinion demonstrated the same kind of intellectual courage and curiosity that my colleagues at the Atlantic had shown, I hoped, the rest of the media would follow.

You did not have to go along with everything that any tribe said. You did not have to pretend that the good guys, much as you might have respected them, were right about everything, or that the bad guys, much as you might have disdained them, never had a point. You did not, in other words, ever have to lie.

This fundamental honesty was vital for readers, because it equipped them to make better, more informed judgments about the world. Sometimes it might shock or upset them by failing to conform to their picture of reality. But it also granted them the respect of acknowledging that they were able to work things out for themselves.

The Atlantic did not aspire to the same role as the Times. It did not promise to serve up the news of the day without any bias. But it was to opinion journalism what the Times’s reporting was supposed to be to news: honest and open to the world.

Those were the glory days of the blog, and we hit on the idea of creating a living op-ed page, a collective of bloggers with different points of view but a shared intellectual honesty who would argue out the meaning of the news of the day

They were brilliant, gutsy writers, and their disagreements were deep enough that I used to joke that my main work as editor was to prevent fistfights.

Under its owner, David Bradley, my colleagues and I distilled our purpose as publishing big arguments about big ideas

we also began producing some of the most important work in American journalism: Nicholas Carr on whether Google was “making us stupid”; Hanna Rosin on “the end of men”; Taylor Branch on “the shame of college sports”; Ta-Nehisi Coates on “the case for reparations”; Greg Lukianoff and Jonathan Haidt on “the coddling of the American mind”.

I was starting to see some effects of the new campus politics within the Atlantic. A promising new editor had created a digital form for aspiring freelancers to fill out, and she wanted to ask them to disclose their racial and sexual identity. Why? Because, she said, if we were to write about the trans community, for example, we would ask a trans person to write the story

There was a good argument for that, I acknowledged, and it sometimes might be the right answer. But as I thought about the old people, auto workers and abortion opponents I had learned from, I told her there was also an argument for correspondents who brought an outsider’s ignorance, along with curiosity and empathy, to the story.

A journalism that starts out assuming it knows the answers, it seemed to me then, and seems even more so to me now, can be far less valuable to the reader than a journalism that starts out with a humbling awareness that it knows nothing.

In the age of the internet it is hard even for a child to sustain an “innocent eye”, but the alternative for journalists remains as dangerous as ever, to become propagandists. America has more than enough of those already.

When I looked around the Opinion department, change was not what I perceived. Excellent writers and editors were doing excellent work. But the department’s journalism was consumed with politics and foreign affairs in an era when readers were also fascinated by changes in technology, business, science and culture.

Fairly quickly, though, I realised two things: first, that if I did my job as I thought it should be done, and as the Sulzbergers said they wanted me to do it, I would be too polarising internally ever to lead the newsroom; second, that I did not want that job, though no one but my wife believed me when I said that.

there was a compensating moral and psychological privilege that came with aspiring to journalistic neutrality and open-mindedness, despised as they might understandably be by partisans. Unlike the duelling politicians and advocates of all kinds, unlike the corporate chieftains and their critics, unlike even the sainted non-profit workers, you did not have to pretend things were simpler than they actually were

On the right and left, America’s elites now talk within their tribes, and get angry or contemptuous on those occasions when they happen to overhear the other conclave. If they could be coaxed to agree what they were arguing about, and the rules by which they would argue about it, opinion journalism could serve a foundational need of the democracy by fostering diverse and inclusive debate. Who could be against that?

The large staff of op-ed editors contained only a couple of women. Although the 11 columnists were individually admirable, only two of them were women and only one was a person of colour

Not only did they all focus on politics and foreign affairs, but during the 2016 campaign, no columnist shared, in broad terms, the worldview of the ascendant progressives of the Democratic Party, incarnated by Bernie Sanders. And only two were conservative.

This last fact was of particular concern to the elder Sulzberger. He told me the Times needed more conservative voices, and that its own editorial line had become predictably left-wing. “Too many liberals,” read my notes about the Opinion line-up from a meeting I had with him and Mark Thompson, then the chief executive, as I was preparing to rejoin the paper. “Even conservatives are liberals’ idea of a conservative.” The last note I took from that meeting was: “Can’t ignore 150m conservative Americans.”

As I knew from my time at the Atlantic, this kind of structural transformation can be frightening and even infuriating for those understandably proud of things as they are. It is hard on everyone

experience at the Atlantic also taught me that pursuing new ways of doing journalism in pursuit of venerable institutional principles created enthusiasm for change. I expected that same dynamic to allay concerns at the Times.

If Opinion published a wider range of views, it would help frame a set of shared arguments that corresponded to, and drew upon, the set of shared facts coming from the newsroom.

New progressive voices were celebrated within the Times. But in contrast to the Wall Street Journal and the Washington Post, conservative voices – even eloquent anti-Trump conservative voices – were despised, regardless of how many leftists might surround them.

The Opinion department mocked the paper’s claim to value diversity. It did not have a single black editor

Eventually, it sank in that my snotty joke was actually on me: I was the one ignorantly fighting a battle that was already lost. The old liberal embrace of inclusive debate that reflected the country’s breadth of views had given way to a new intolerance for the opinions of roughly half of American voters.

Out of naivety or arrogance, I was slow to recognise that at the Times, unlike at the Atlantic, these values were no longer universally accepted, let alone esteemed

After the 9/11 attacks, as the bureau chief in Jerusalem, I spent a lot of time in the Gaza Strip interviewing Hamas leaders, recruiters and foot soldiers, trying to understand and describe their murderous ideology. Some readers complained that I was providing a platform for terrorists, but there was never any objection from within the Times.

Our role, we knew, was to help readers understand such threats, and this required empathetic – not sympathetic – reporting. This is not an easy distinction but good reporters make it: they learn to understand and communicate the sources and nature of a toxic ideology without justifying it, much less advocating it.

Today’s newsroom turns that moral logic on its head, at least when it comes to fellow Americans. Unlike the views of Hamas, the views of many Americans have come to seem dangerous to engage in the absence of explicit condemnation

Focusing on potential perpetrators – “platforming” them by explaining rather than judging their views – is believed to empower them to do more harm.

After the profile of the Ohio man was published, media Twitter lit up with attacks on the article as “normalising” Nazism and white nationalism, and the Times convulsed internally. The Times wound up publishing a cringing editor’s note that hung the writer out to dry and approvingly quoted some of the criticism, including a tweet from a Washington Post opinion editor asking, “Instead of long, glowing profiles of Nazis/White nationalists, why don’t we profile the victims of their ideologies”?

the Times lacked the confidence to defend its own work

The editor’s note paraded the principle of publishing such pieces, saying it was important to “shed more light, not less, on the most extreme corners of American life”. But less light is what the readers got. As a reporter in the newsroom, you’d have to have been an idiot after that explosion to attempt such a profile

Empathetic reporting about Trump supporters became even more rare. It became a cliché among influential left-wing columnists and editors that blinkered political reporters interviewed a few Trump supporters in diners and came away suckered into thinking there was something besides racism that could explain anyone’s support for the man.

After a year spent publishing editorials attacking Trump and his policies, I thought it would be a demonstration of Timesian open-mindedness to give his supporters their say. Also, I thought the letters were interesting, so I turned over the entire editorial page to the Trump letters.

I wasn’t surprised that we got some criticism on Twitter. But I was astonished by the fury of my Times colleagues. I found myself facing an angry internal town hall, trying to justify what to me was an obvious journalistic decision

Didn’t he think other Times readers should understand the sources of Trump’s support? Didn’t he also see it was a wonderful thing that some Trump supporters did not just dismiss the Times as fake news, but still believed in it enough to respond thoughtfully to an invitation to share their views?

And if the Times could not bear to publish the views of Americans who supported Trump, why should it be surprised that those voters would not trust it?

Two years later, in 2020, Baquet acknowledged that in 2016 the Times had failed to take seriously the idea that Trump could become president partly because it failed to send its reporters out into America to listen to voters and understand “the turmoil in the country”. And, he continued, the Times still did not understand the views of many Americans

Speaking four months before we published the Cotton op-ed, he said that to argue that the views of such voters should not appear in the Times was “not journalistic”.

Conservative arguments in the Opinion pages reliably started uproars within the Times. Sometimes I would hear directly from colleagues who had the grace to confront me with their concerns; more often they would take to the company’s Slack channels or Twitter to advertise their distress in front of each other

This environment of enforced group-think, inside and outside the paper, was hard even on liberal opinion writers. One left-of-centre columnist told me that he was reluctant to appear in the New York office for fear of being accosted by colleagues.

An internal survey shortly after I left the paper found that barely half the staff, within an enterprise ostensibly devoted to telling the truth, agreed “there is a free exchange of views in this company” and “people are not afraid to say what they really think”.)

Even columnists with impeccable leftist bona fides recoiled from tackling subjects when their point of view might depart from progressive orthodoxy.

The bias had become so pervasive, even in the senior editing ranks of the newsroom, as to be unconscious

Trying to be helpful, one of the top newsroom editors urged me to start attaching trigger warnings to pieces by conservatives. It had not occurred to him how this would stigmatise certain colleagues, or what it would say to the world about the Times’s own bias

By their nature, information bubbles are powerfully self-reinforcing, and I think many Times staff have little idea how closed their world has become, or how far they are from fulfilling their compact with readers to show the world “without fear or favour”

sometimes the bias was explicit: one newsroom editor told me that, because I was publishing more conservatives, he felt he needed to push his own department further to the left.

The Times’s failure to honour its own stated principles of openness to a range of views was particularly hard on the handful of conservative writers, some of whom would complain about being flyspecked and abused by colleagues. One day when I relayed a conservative’s concern about double standards to Sulzberger, he lost his patience. He told me to inform the complaining conservative that that’s just how it was: there was a double standard and he should get used to it.

A publication that promises its readers to stand apart from politics should not have different standards for different writers based on their politics. But I delivered the message. There are many things I regret about my tenure as editorial-page editor. That is the only act of which I am ashamed.

I began to think of myself not as a benighted veteran on a remote island, but as Rip Van Winkle. I had left one newspaper, had a pleasant dream for ten years, and returned to a place I barely recognised.

The new New York Times was the product of two shocks – sudden collapse, and then sudden success. The paper almost went bankrupt during the financial crisis, and the ensuing panic provoked a crisis of confidence among its leaders. Digital competitors like the HuffPost were gaining readers and winning plaudits within the media industry as innovative. They were the cool kids; Times folk were ink-stained wrinklies.

In its panic, the Times bought out experienced reporters and editors and began hiring journalists from publications like the HuffPost who were considered “digital natives” because they had never worked in print. This hiring quickly became easier, since most digital publications financed by venture capital turned out to be bad businesses

Though they might have lacked deep or varied reporting backgrounds, some of the Times’s new hires brought skills in video and audio; others were practised at marketing themselves – building their brands, as journalists now put it – in social media. Some were brilliant and fiercely honest, in keeping with the old aspirations of the paper.

critically, the Times abandoned its practice of acculturation, including those months-long assignments on Metro covering cops and crime or housing. Many new hires who never spent time in the streets went straight into senior writing and editing roles.

All these recruits arrived with their own notions of the purpose of the Times. To me, publishing conservatives helped fulfil the paper’s mission; to them, I think, it betrayed that mission.

then, to the shock and horror of the newsroom, Trump won the presidency. In his article for Columbia Journalism Review, Sulzberger cites the Times’s failure to take Trump’s chances seriously as an example of how “prematurely shutting down inquiry and debate” can allow “conventional wisdom to ossify in a way that blinds society.

Many Times staff members – scared, angry – assumed the Times was supposed to help lead the resistance. Anxious for growth, the Times’s marketing team implicitly endorsed that idea, too.

As the number of subscribers ballooned, the marketing department tracked their expectations, and came to a nuanced conclusion. More than 95% of Times subscribers described themselves as Democrats or independents, and a vast majority of them believed the Times was also liberal

A similar majority applauded that bias; it had become “a selling point”, reported one internal marketing memo. Yet at the same time, the marketers concluded, subscribers wanted to believe that the Times was independent.

As that memo argued, even if the Times was seen as politically to the left, it was critical to its brand also to be seen as broadening its readers’ horizons, and that required “a perception of independence”.

Readers could cancel their subscriptions if the Times challenged their worldview by reporting the truth without regard to politics. As a result, the Times’s long-term civic value was coming into conflict with the paper’s short-term shareholder value

The Times has every right to pursue the commercial strategy that makes it the most money. But leaning into a partisan audience creates a powerful dynamic. Nobody warned the new subscribers to the Times that it might disappoint them by reporting truths that conflicted with their expectations

When your product is “independent journalism”, that commercial strategy is tricky, because too much independence might alienate your audience, while too little can lead to charges of hypocrisy that strike at the heart of the brand.

It became one of Dean Baquet’s frequent mordant jokes that he missed the old advertising-based business model, because, compared with subscribers, advertisers felt so much less sense of ownership over the journalism

The Times was slow to break it to its readers that there was less to Trump’s ties to Russia than they were hoping, and more to Hunter Biden’s laptop, that Trump might be right that covid came from a Chinese lab, that masks were not always effective against the virus, that shutting down schools for many months was a bad idea.

there has been a sea change over the past ten years in how journalists think about pursuing justice. The reporters’ creed used to have its foundation in liberalism, in the classic philosophical sense. The exercise of a reporter’s curiosity and empathy, given scope by the constitutional protections of free speech, would equip readers with the best information to form their own judgments. The best ideas and arguments would win out

The journalist’s role was to be a sworn witness; the readers’ role was to be judge and jury. In its idealised form, journalism was lonely, prickly, unpopular work, because it was only through unrelenting scepticism and questioning that society could advance. If everyone the reporter knew thought X, the reporter’s role was to ask: why X?

Illiberal journalists have a different philosophy, and they have their reasons for it. They are more concerned with group rights than individual rights, which they regard as a bulwark for the privileges of white men. They have seen the principle of  free speech used to protect right-wing outfits like Project Veritas and Breitbart News and are uneasy with it.

They had their suspicions of their fellow citizens’ judgment confirmed by Trump’s election, and do not believe readers can be trusted with potentially dangerous ideas or facts. They are not out to achieve social justice as the knock-on effect of pursuing truth; they want to pursue it head-on

The term “objectivity” to them is code for ignoring the poor and weak and cosying up to power, as journalists often have done.

And they do not just want to be part of the cool crowd. They need to be

To be more valued by their peers and their contacts – and hold sway over their bosses – they need a lot of followers in social media. That means they must be seen to applaud the right sentiments of the right people in social media

The journalist from central casting used to be a loner, contrarian or a misfit. Now journalism is becoming another job for joiners, or, to borrow Twitter’s own parlance, “followers”, a term that mocks the essence of a journalist’s role.

The new newsroom ideology seems idealistic, yet it has grown from cynical roots in academia: from the idea that there is no such thing as objective truth; that there is only narrative, and that therefore whoever controls the narrative – whoever gets to tell the version of the story that the public hears – has the whip hand

What matters, in other words, is not truth and ideas in themselves, but the power to determine both in the public mind.

By contrast, the old newsroom ideology seems cynical on its surface. It used to bug me that my editors at the Times assumed every word out of the mouth of any person in power was a lie.

And the pursuit of objectivity can seem reptilian, even nihilistic, in its abjuration of a fixed position in moral contests. But the basis of that old newsroom approach was idealistic: the notion that power ultimately lies in truth and ideas, and that the citizens of a pluralistic democracy, not leaders of any sort, must be trusted to judge both.

Our role in Times Opinion, I used to urge my colleagues, was not to tell people what to think, but to help them fulfil their desire to think for themselves.

It seems to me that putting the pursuit of truth, rather than of justice, at the top of a publication’s hierarchy of values also better serves not just truth but justice, too

over the long term journalism that is not also sceptical of the advocates of any form of justice and the programmes they put forward, and that does not struggle honestly to understand and explain the sources of resistance,

will not assure that those programmes will work, and it also has no legitimate claim to the trust of reasonable people who see the world very differently. Rather than advance understanding and durable change, it provokes backlash.

The impatience within the newsroom with such old ways was intensified by the generational failure of the Times to hire and promote women and non-white people

Pay attention if you are white at the Times and you will hear black editors speak of hiring consultants at their own expense to figure out how to get white staff to respect them

As wave after wave of pain and outrage swept through the Times, over a headline that was not damning enough of Trump or someone’s obnoxious tweets, I came to think of the people who were fragile, the ones who were caught up in Slack or Twitter storms, as people who had only recently discovered that they were white and were still getting over the shock.

Having concluded they had got ahead by working hard, it has been a revelation to them that their skin colour was not just part of the wallpaper of American life, but a source of power, protection and advancement.

I share the bewilderment that so many people could back Trump, given the things he says and does, and that makes me want to understand why they do: the breadth and diversity of his support suggests not just racism is at work. Yet these elite, well-meaning Times staff cannot seem to stretch the empathy they are learning to extend to people with a different skin colour to include those, of whatever race, who have different politics.

The digital natives were nevertheless valuable, not only for their skills but also because they were excited for the Times to embrace its future. That made them important allies of the editorial and business leaders as they sought to shift the Times to digital journalism and to replace staff steeped in the ways of print. Partly for that reason, and partly out of fear, the leadership indulged internal attacks on Times journalism, despite pleas from me and others, to them and the company as a whole, that Times folk should treat each other with more respect

My colleagues and I in Opinion came in for a lot of the scorn, but we were not alone. Correspondents in the Washington bureau and political reporters would take a beating, too, when they were seen as committing sins like “false balance” because of the nuance in their stories.

My fellow editorial and commercial leaders were well aware of how the culture of the institution had changed. As delighted as they were by the Times’s digital transformation they were not blind to the ideological change that came with it. They were unhappy with the bullying and group-think; we often discussed such cultural problems in the weekly meetings of the executive committee, composed of the top editorial and business leaders, including the publisher. Inevitably, these bitch sessions would end with someone saying a version of: “Well, at some point we have to tell them this is what we believe in as a newspaper, and if they don’t like it they should work somewhere else.” It took me a couple of years to realise that this moment was never going to come.

There is a lot not to miss about the days when editors like Boyd could strike terror in young reporters like me and Purdum. But the pendulum has swung so far in the other direction that editors now tremble before their reporters and even their interns. “I miss the old climate of fear,” Baquet used to say with a smile, in another of his barbed jokes.

I wish I’d pursued my point and talked myself out of the job. This contest over control of opinion journalism within the Times was not just a bureaucratic turf battle (though it was that, too)

The newsroom’s embrace of opinion journalism has compromised the Times’s independence, misled its readers and fostered a culture of intolerance and conformity.

The Opinion department is a relic of the era when the Times enforced a line between news and opinion journalism.

Editors in the newsroom did not touch opinionated copy, lest they be contaminated by it, and opinion journalists and editors kept largely to their own, distant floor within the Times building. Such fastidiousness could seem excessive, but it enforced an ethos that Times reporters owed their readers an unceasing struggle against bias in the news

But by the time I returned as editorial-page editor, more opinion columnists and critics were writing for the newsroom than for Opinion. As at the cable news networks, the boundaries between commentary and news were disappearing, and readers had little reason to trust that Times journalists were resisting rather than indulging their biases

The Times newsroom had added more cultural critics, and, as Baquet noted, they were free to opine about politics.

Departments across the Times newsroom had also begun appointing their own “columnists”, without stipulating any rules that might distinguish them from columnists in Opinion

I checked to see if, since I left the Times, it had developed guidelines explaining the difference, if any, between a news columnist and opinion columnist. The paper’s spokeswoman, Danielle Rhoades Ha, did not respond to the question.)

The internet rewards opinionated work and, as news editors felt increasing pressure to generate page views, they began not just hiring more opinion writers but also running their own versions of opinionated essays by outside voices – historically, the province of Opinion’s op-ed department.

Yet because the paper continued to honour the letter of its old principles, none of this work could be labelled “opinion” (it still isn’t). After all, it did not come from the Opinion department.

And so a newsroom technology columnist might call for, say, unionisation of the Silicon Valley workforce, as one did, or an outside writer might argue in the business section for reparations for slavery, as one did, and to the average reader their work would appear indistinguishable from Times news articles.

By similarly circular logic, the newsroom’s opinion journalism breaks another of the Times’s commitments to its readers. Because the newsroom officially does not do opinion – even though it openly hires and publishes opinion journalists – it feels free to ignore Opinion’s mandate to provide a diversity of views

When I was editorial-page editor, there were a couple of newsroom columnists whose politics were not obvious. But the other newsroom columnists, and the critics, read as passionate progressives.

I urged Baquet several times to add a conservative to the newsroom roster of cultural critics. That would serve the readers by diversifying the Times’s analysis of culture, where the paper’s left-wing bias had become most blatant, and it would show that the newsroom also believed in restoring the Times’s commitment to taking conservatives seriously. He said this was a good idea, but he never acted on it

I couldn’t help trying the idea out on one of the paper’s top cultural editors, too: he told me he did not think Times readers would be interested in that point of view.

opinion was spreading through the newsroom in other ways. News desks were urging reporters to write in the first person and to use more “voice”, but few newsroom editors had experience in handling that kind of journalism, and no one seemed certain where “voice” stopped and “opinion” began

The Times magazine, meanwhile, became a crusading progressive publication

Baquet liked to say the magazine was Switzerland, by which he meant that it sat between the newsroom and Opinion. But it reported only to the news side. Its work was not labelled as opinion and it was free to omit conservative viewpoints.

his creep of politics into the newsroom’s journalism helped the Times beat back some of its new challengers, at least those on the left

Competitors like Vox and the HuffPost were blending leftish politics with reporting and writing it up conversationally in the first person. Imitating their approach, along with hiring some of their staff, helped the Times repel them. But it came at a cost. The rise of opinion journalism over the past 15 years changed the newsroom’s coverage and its culture

The tiny redoubt of never-Trump conservatives in Opinion is swamped daily not only by the many progressives in that department but their reinforcements among the critics, columnists and magazine writers in the newsroom

They are generally excellent, but their homogeneity means Times readers are being served a very restricted range of views, some of them presented as straight news by a publication that still holds itself out as independent of any politics.

And because the critics, newsroom columnists and magazine writers are the newsroom’s most celebrated journalists, they have disproportionate influence over the paper’s culture.

By saying that it still holds itself to the old standard of strictly separating its news and opinion journalists, the paper leads its readers further into the trap of thinking that what they are reading is independent and impartial – and this misleads them about their country’s centre of political and cultural gravity.

And yet the Times insists to the public that nothing has changed.

“Even though each day’s opinion pieces are typically among our most popular journalism and our columnists are among our most trusted voices, we believe opinion is secondary to our primary mission of reporting and should represent only a portion of a healthy news diet,” Sulzberger wrote in the Columbia Journalism Review. “For that reason, we’ve long kept the Opinion department intentionally small – it represents well under a tenth of our journalistic staff – and ensured that its editorial decision-making is walled off from the newsroom.”

When I was editorial-page editor, Sulzberger, who declined to be interviewed on the record for this article, worried a great deal about the breakdown in the boundaries between news and opinion

He told me once that he would like to restructure the paper to have one editor oversee all its news reporters, another all its opinion journalists and a third all its service journalists, the ones who supply guidance on buying gizmos or travelling abroad. Each of these editors would report to him

That is the kind of action the Times needs to take now to confront its hypocrisy and begin restoring its independence.

The Times could learn something from the Wall Street Journal, which has kept its journalistic poise

It has maintained a stricter separation between its news and opinion journalism, including its cultural criticism, and that has protected the integrity of its work.

After I was chased out of the Times, Journal reporters and other staff attempted a similar assault on their opinion department. Some 280 of them signed a letter listing pieces they found offensive and demanding changes in how their opinion colleagues approached their work. “Their anxieties aren’t our responsibility,” shrugged the Journal’s editorial board in a note to readers after the letter was leaked. “The signers report to the news editors or other parts of the business.” The editorial added, in case anyone missed the point, “We are not the New York Times.” That was the end of it.

Unlike the publishers of the Journal, however, Sulzberger is in a bind, or at least perceives himself to be

The confusion within the Times over its role, and the rising tide of intolerance among the reporters, the engineers, the business staff, even the subscribers – these are all problems he inherited, in more ways than one. He seems to feel constrained in confronting the paper’s illiberalism by the very source of his authority

The paradox is that in previous generations the Sulzbergers’ control was the bulwark of the paper’s independence.

if he is going to instil the principles he believes in, he needs to stop worrying so much about his powers of persuasion, and start using the power he is so lucky to have.

Shortly after we published the op-ed that Wednesday afternoon, some reporters tweeted their opposition to Cotton’s argument. But the real action was in the Times’s Slack channels, where reporters and other staff began not just venting but organising. They turned to the union to draw up a workplace complaint about the op-ed.

The next day, this reporter shared the byline on the Times story about the op-ed. That article did not mention that Cotton had distinguished between “peaceful, law-abiding protesters” and “rioters and looters”. In fact, the first sentence reported that Cotton had called for “the military to suppress protests against police violence”.

This was – and is – wrong. You don’t have to take my word for that. You can take the Times’s

Three days later in its article on my resignation it also initially reported that Cotton had called “for military force against protesters in American cities”. This time, after the article was published on the Times website, the editors scrambled to rewrite it, replacing “military force” with “military response” and “protesters” with “civic unrest”

That was a weaselly adjustment – Cotton wrote about criminality, not “unrest” – but the article at least no longer unambiguously misrepresented Cotton’s argument to make it seem he was in favour of crushing democratic protest. The Times did not publish a correction or any note acknowledging the story had been changed.

Seeking to influence the outcome of a story you cover, particularly without disclosing that to the reader, violates basic principles I was raised on at the Times

s Rhoades Ha disputes my characterisation of the after-the-fact editing of the story about my resignation. She said the editors changed the story after it was published on the website in order to “refine” it and “add context”, and so the story did not merit a correction disclosing to the reader that changes had been made.

In retrospect what seems almost comical is that as the conflict over Cotton’s op-ed unfolded within the Times I acted as though it was on the level, as though the staff of the Times would have a good-faith debate about Cotton’s piece and the decision to publish it

Instead, people wanted to vent and achieve what they considered to be justice, whether through Twitter, Slack, the union or the news pages themselves

My colleagues in Opinion, together with the PR team, put together a series of connected tweets describing the purpose behind publishing Cotton’s op-ed. Rather than publish these tweets from the generic Times Opinion Twitter account, Sulzberger encouraged me to do it from my personal one, on the theory that this would humanise our defence. I doubted that would make any difference, but it was certainly my job to take responsibility. So I sent out the tweets, sticking my head in a Twitter bucket that clangs, occasionally, to this day

What is worth recalling now from the bedlam of the next two days? I suppose there might be lessons for someone interested in how not to manage a corporate crisis. I began making my own mistakes that Thursday. The union condemned our publication of Cotton, for supposedly putting journalists in danger, claiming that he had called on the military “to ‘detain’ and ‘subdue’ Americans protesting racism and police brutality” – again, a misrepresentation of his argument. The publisher called to tell me the company was experiencing its largest sick day in history; people were turning down job offers because of the op-ed, and, he said, some people were quitting. He had been expecting for some time that the union would seek a voice in editorial decision-making; he said he thought this was the moment the union was making its move. He had clearly changed his own mind about the value of publishing the Cotton op-ed.

I asked Dao to have our fact-checkers review the union’s claims. But then I went a step further: at the publisher’s request, I urged him to review the editing of the piece itself and come back to me with a list of steps we could have taken to make it better. Dao’s reflex – the correct one – was to defend the piece as published. He and three other editors of varying ages, genders and races had helped edit it; it had been fact-checked, as is all our work

This was my last failed attempt to have the debate within the Times that I had been seeking for four years, about why it was important to present Times readers with arguments like Cotton’s. The staff at the paper never wanted to have that debate. The Cotton uproar was the most extreme version of the internal reaction we faced whenever we published conservative arguments that were not simply anti-Trump. Yes, yes, of course we believe in the principle of publishing diverse views, my Times colleagues would say, but why this conservative? Why this argument?

I doubt these changes would have mattered, and to extract this list from Dao was to engage in precisely the hypocrisy I claimed to despise – that, in fact, I do despise. If Cotton needed to be held to such standards of politesse, so did everyone else. Headlines such as “Tom Cotton’s Fascist Op-ed”, the headline of a subsequent piece, should also have been tranquillised.

As that miserable Thursday wore on, Sulzberger, Baquet and I held a series of Zoom meetings with reporters and editors from the newsroom who wanted to discuss the op-ed. Though a handful of the participants were there to posture, these were generally constructive conversations. A couple of people, including Baquet, even had the guts to speak up in favour of publishing the op-ed

Two moments stick out. At one point, in answer to a question, Sulzberger and Baquet both said they thought the op-ed – as the Times union and many journalists were saying – had in fact put journalists in danger. That was the first time I realised I might be coming to the end of the road.

The other was when a pop-culture reporter asked if I had read the op-ed before it was published. I said I had not. He immediately put his head down and started typing, and I should have paid attention rather than moving on to the next question. He was evidently sharing the news with the company over Slack.

Every job review I had at the Times urged me to step back from the daily coverage to focus on the long term. (Hilariously, one review, urging me to move faster in upending the Opinion department, instructed me to take risks and “ask for forgiveness not permission”.)

I learned when these meetings were over that there had been a new eruption in Slack. Times staff were saying that Rubenstein had been the sole editor of the op-ed. In response, Dao had gone into Slack to clarify to the entire company that he had also edited it himself. But when the Times posted the news article that evening, it reported, “The Op-Ed was edited by Adam Rubenstein” and made no mention of Dao’s statement

Early that morning, I got an email from Sam Dolnick, a Sulzberger cousin and a top editor at the paper, who said he felt “we” – he could have only meant me – owed the whole staff “an apology for appearing to place an abstract idea like open debate over the value of our colleagues’ lives, and their safety”. He was worried that I and my colleagues had unintentionally sent a message to other people at the Times that: “We don’t care about their full humanity and their security as much as we care about our ideas.”

“I know you don’t like it when I talk about principles at a moment like this,” I began. But I viewed the journalism I had been doing, at the Times and before that at the Atlantic, in very different terms from the ones Dolnick presumed. “I don’t think of our work as an abstraction without meaning for people’s lives – quite the opposite,” I continued. “The whole point – the reason I do this – is to have an impact on their lives to the good. I have always believed that putting ideas, including potentially dangerous one[s], out in the public is vital to ensuring they are debated and, if dangerous, discarded.” It was, I argued, in “edge cases like this that principles are tested”, and if my position was judged wrong then “I am out of step with the times.” But, I concluded, “I don’t think of us as some kind of debating society without implications for the real world and I’ve never been unmindful of my colleagues’ humanity.”

in the end, one thing he and I surely agree on is that I was, in fact, out of step with the Times. It may have raised me as a journalist – and invested so much in educating me to what were once its standards – but I did not belong there any more.

Finally, I came up with something that felt true. I told the meeting that I was sorry for the pain that my leadership of Opinion had caused. What a pathetic thing to say. I did not think to add, because I’d lost track of this truth myself by then, that opinion journalism that never causes pain is not journalism. It can’t hope to move society forward

As I look back at my notes of that awful day, I don’t regret what I said. Even during that meeting, I was still hoping the blow-up might at last give me the chance either to win support for what I had been asked to do, or to clarify once and for all that the rules for journalism had changed at the Times.

But no one wanted to talk about that. Nor did they want to hear about all the voices of vulnerable or underprivileged people we had been showcasing in Opinion, or the ambitious new journalism we were doing. Instead, my Times colleagues demanded to know things such as the names of every editor who had had a role in the Cotton piece. Having seen what happened to Rubenstein I refused to tell them. A Slack channel had been set up to solicit feedback in real time during the meeting, and it was filling with hate. The meeting ran long, and finally came to a close after 90 minutes.

I tried to insist, as did Dao, that the note make clear the Cotton piece was within our editorial bounds. Sulzberger said he felt the Times could afford to be “silent” on that question. In the end the note went far further in repudiating the piece than I anticipated, saying it should never have been published at all. The next morning I was told to resign.

It was a terrible moment for the country. By the traditional – and perverse – logic of journalism, that should also have made it an inspiring time to be a reporter, writer or editor. Journalists are supposed to run towards scenes that others are fleeing, towards hard truths others need to know, towards consequential ideas they would prefer to ignore.

But fear got all mixed up with anger inside the Times, too, along with a desire to act locally in solidarity with the national movement. That energy found a focus in the Cotton op-ed

the Times is not good at acknowledging mistakes. Indeed, one of my own, within the Times culture, was to take responsibility for any mistakes my department made, and even some it didn’t

To Sulzberger, the meltdown over Cotton’s op-ed and my departure in disgrace are explained and justified by a failure of editorial “process”. As he put it in an interview with the New Yorker this summer, after publishing his piece in the Columbia Journalism Review, Cotton’s piece was not “perfectly fact-checked” and the editors had not “thought about the headline and presentation”. He contrasted the execution of Cotton’s opinion piece with that of a months-long investigation the newsroom did of Donald Trump’s taxes (which was not “perfectly fact-checked”, as it happens – it required a correction). He did not explain why, if the Times was an independent publication, an op-ed making a mainstream conservative argument should have to meet such different standards from an op-ed making any other kind of argument, such as for the abolition of the police

“It’s not enough just to have the principle and wave it around,” he said. “You also have to execute on it.”

To me, extolling the virtue of independent journalism in the pages of the Columbia Journalism Review is how you wave a principle around. Publishing a piece like Cotton’s is how you execute on it.

As Sulzberger also wrote in the Review, “Independent journalism, especially in a pluralistic democracy, should err on the side of treating areas of serious political contest as open, unsettled, and in need of further inquiry.

If Sulzberger must insist on comparing the execution of the Cotton op-ed with that of the most ambitious of newsroom projects, let him compare it with something really important, the 1619 Project, which commemorated the 400th anniversary of the arrival of enslaved Africans in Virginia.

Like Cotton’s piece, the 1619 Project was fact-checked and copy-edited (most of the Times newsroom does not fact-check or copy-edit articles, but the magazine does). But it nevertheless contained mistakes, as journalism often does. Some of these mistakes ignited a firestorm among historians and other readers.

And, like Cotton’s piece, the 1619 Project was presented in a way the Times later judged to be too provocative.

The Times declared that the 1619 Project “aims to reframe the country’s history, understanding 1619 as our true founding”. That bold statement – a declaration of Times fact, not opinion, since it came from the newsroom – outraged many Americans who venerated 1776 as the founding. The Times later stealthily erased it from the digital version of the project, but was caught doing so by a writer for the publication Quillette. Sulzberger told me during the initial uproar that the top editors in the newsroom – not just Baquet but his deputy – had not reviewed the audacious statement of purpose, one of the biggest editorial claims the paper has ever made. They also, of course, did not edit all the pieces themselves, trusting the magazine’s editors to do that work.

If the 1619 Project and the Cotton op-ed shared the same supposed flaws and excited similar outrage, how come that one is lauded as a landmark success and the other is a sackable offence?

I am comparing them only to meet Sulzberger on his terms, in order to illuminate what he is trying to elide. What distinguished the Cotton piece was not an error, or strong language, or that I didn’t edit it personally. What distinguished that op-ed was not process. It was politics.

It is one thing for the Times to aggravate historians, or conservatives, or even old-school liberals who believe in open debate. It has become quite another for the Times to challenge some members of its own staff with ideas that might contradict their view of the world.

The lessons of the incident are not about how to write a headline but about how much the Times has changed – how digital technology, the paper’s new business model and the rise of new ideals among its staff have altered its understanding of the boundary between news and opinion, and of the relationship between truth and justice

Ejecting me was one way to avoid confronting the question of which values the Times is committed to. Waving around the word “process” is another.

As he asserts the independence of Times journalism, Sulzberger is finding it necessary to reach back several years to another piece I chose to run, for proof that the Times remains willing to publish views that might offend its staff. “We’ve published a column by the head of the part of the Taliban that kidnapped one of our own journalists,” he told the New Yorker. He is missing the real lesson of that piece, as well.

The case against that piece is that Haqqani, who remains on the FBI’s most-wanted terrorist list, may have killed Americans. It’s puzzling: in what moral universe can it be a point of pride to publish a piece by an enemy who may have American blood on his hands, and a matter of shame to publish a piece by an American senator arguing for American troops to protect Americans?

As Mitch McConnell, then the majority leader, said on the Senate floor about the Times’s panic over the Cotton op-ed, listing some other debatable op-ed choices, “Vladimir Putin? No problem. Iranian propaganda? Sure. But nothing, nothing could have prepared them for 800 words from the junior senator from Arkansas.”

The Times’s staff members are not often troubled by obnoxious views when they are held by foreigners. This is an important reason the paper’s foreign coverage, at least of some regions, remains exceptional.

What seems most important and least understood about that episode is that it demonstrated in real time the value of the ideals that I poorly defended in the moment, ideals that not just the Times’s staff but many other college-educated Americans are abandoning.

After all, we ran the experiment; we published the piece. Was any Times journalist hurt? No. Nobody in the country was. In fact, though it is impossible to know the op-ed’s precise effect, polling showed that support for a military option dropped after the Times published the essay, as the Washington Post’s media critic, Erik Wemple, has written

If anything, in other words, publishing the piece stimulated debate that made it less likely Cotton’s position would prevail. The liberal, journalistic principle of open debate was vindicated in the very moment the Times was fleeing from it.

If the world had adopted the proposal widely endorsed at the end of the ’80s — a freezing of carbon emissions, with a reduction of 20 percent by 2005 — warming could have been held to less than 1.5 degrees.

Action had to be taken, and the United States would need to lead. It didn’t.

There can be no understanding of our current and future predicament without understanding why we failed to solve this problem when we had the chance.

The first suggestion to Rafe Pomerance that humankind was destroying the conditions necessary for its own survival came on Page 66 of the government publication EPA-600/7-78-019. It was a technical report about coal

‘This Is the Whole Banana’ Spring 1979

here was an urgent problem that demanded their attention, MacDonald believed, because human civilization faced an existential crisis. In “How to Wreck the Environment,” a 1968 essay published while he was a science adviser to Lyndon Johnson, MacDonald predicted a near future in which “nuclear weapons were effectively banned and the weapons of mass destruction were those of environmental catastrophe.” One of the most potentially devastating such weapons, he believed, was the gas that we exhaled with every breath: carbon dioxide. By vastly increasing carbon emissions, the world’s most advanced militaries could alter weather patterns and wreak famine, drought and economic collapse.

the Jasons. They were like one of those teams of superheroes with complementary powers that join forces in times of galactic crisis. They had been brought together by federal agencies, including the C.I.A, to devise scientific solutions to national-security problems: how to detect an incoming missile; how to predict fallout from a nuclear bomb; how to develop unconventional weapons, like plague-infested rats.

Agle pointed to an article about a prominent geophysicist named Gordon MacDonald, who was conducting a study on climate change with the Jasons, the mysterious coterie of elite scientists to which he belonged

During the spring of 1977 and the summer of 1978, the Jasons met to determine what would happen once the concentration of carbon dioxide in the atmosphere doubled from pre-Industrial Revolution levels. It was an arbitrary milestone, the doubling, but a useful one, as its inevitability was not in question; the threshold would most likely be breached by 2035.

The Jasons’ report to the Department of Energy, “The Long-Term Impact of Atmospheric Carbon Dioxide on Climate,” was written in an understated tone that only enhanced its nightmarish findings: Global temperatures would increase by an average of two to three degrees Celsius; Dust Bowl conditions would “threaten large areas of North America, Asia and Africa”; access to drinking water and agricultural production would fall, triggering mass migration on an unprecedented scale. “Perhaps the most ominous feature,” however, was the effect of a changing climate on the poles. Even a minimal warming “could lead to rapid melting” of the West Antarctic ice sheet. The ice sheet contained enough water to raise the level of the oceans 16 feet.

MacDonald explained that he first studied the carbon-dioxide issue when he was about Pomerance’s age — in 1961, when he served as an adviser to John F. Kennedy. Pomerance pieced together that MacDonald, in his youth, had been something of a prodigy: In his 20s, he advised Dwight D. Eisenhower on space exploration; at 32, he became a member of the National Academy of Sciences; at 40, he was appointed to the inaugural Council on Environmental Quality, where he advised Richard Nixon on the environmental dangers of burning coal. He monitored the carbon-dioxide problem the whole time, with increasing alarm.

They were surprised to learn how few senior officials were familiar with the Jasons’ findings, let alone understood the ramifications of global warming. At last, having worked their way up the federal hierarchy, the two went to see the president’s top scientist, Frank Press.

Thus began the Gordon and Rafe carbon-dioxide roadshow. Beginning in the spring of 1979, Pomerance arranged informal briefings with the E.P.A., the National Security Council, The New York Times, the Council on Environmental Quality and the Energy Department, which, Pomerance learned, had established an Office of Carbon Dioxide Effects two years earlier at MacDonald’s urging

. Out of respect for MacDonald, Press had summoned to their meeting what seemed to be the entire senior staff of the president’s Office of Science and Technology Policy — the officials consulted on every critical matter of energy and national security. What Pomerance had expected to be yet another casual briefing assumed the character of a high-level national-security meeting.

MacDonald would begin his presentation by going back more than a century to John Tyndall — an Irish physicist who was an early champion of Charles Darwin’s work and died after being accidentally poisoned by his wife. In 1859, Tyndall found that carbon dioxide absorbed heat and that variations in the composition of the atmosphere could create changes in climate. These findings inspired Svante Arrhenius, a Swedish chemist and future Nobel laureate, to deduce in 1896 that the combustion of coal and petroleum could raise global temperatures. This warming would become noticeable in a few centuries, Arrhenius calculated, or sooner if consumption of fossil fuels continued to increase.

Four decades later, a British steam engineer named Guy Stewart Callendar discovered that, at the weather stations he observed, the previous five years were the hottest in recorded history. Humankind, he wrote in a paper, had become “able to speed up the processes of Nature.” That was in 1939.

MacDonald’s history concluded with Roger Revelle, perhaps the most distinguished of the priestly caste of government scientists who, since the Manhattan Project, advised every president on major policy; he had been a close colleague of MacDonald and Press since they served together under Kennedy. In a 1957 paper written with Hans Suess, Revelle concluded that “human beings are now carrying out a large-scale geophysical experiment of a kind that could not have happened in the past nor be reproduced in the future.” Revelle helped the Weather Bureau establish a continuous measurement of atmospheric carbon dioxide at a site perched near the summit of Mauna Loa on the Big Island of Hawaii, 11,500 feet above the sea — a rare pristine natural laboratory on a planet blanketed by fossil-fuel emissions.

After nearly a decade of observation, Revelle had shared his concerns with Lyndon Johnson, who included them in a special message to Congress two weeks after his inauguration. Johnson explained that his generation had “altered the composition of the atmosphere on a global scale” through the burning of fossil fuels, and his administration commissioned a study of the subject by his Science Advisory Committee. Revelle was its chairman, and its 1965 executive report on carbon dioxide warned of the rapid melting of Antarctica, rising seas, increased acidity of fresh waters — changes that would require no less than a coordinated global effort to forestall.Yet emissions continued to rise, and at this rate, MacDonald warned, they could see a snowless New England, the swamping of major coastal cities, as much as a 40 percent decline in national wheat production, the forced migration of about one-quarter of the world’s population. Not within centuries — within their own lifetimes.

On May 22, Press wrote a letter to the president of the National Academy of Sciences requesting a full assessment of the carbon-dioxide issue. Jule Charney, the father of modern meteorology, would gather the nation’s top oceanographers, atmospheric scientists and climate modelers to judge whether MacDonald’s alarm was justified — whether the world was, in fact, headed to cataclysm.

If Charney’s group confirmed that the world was careering toward an existential crisis, the president would be forced to act.

Hansen turned from the moon to Venus. Why, he tried to determine, was its surface so hot? In 1967, a Soviet satellite beamed back the answer: The planet’s atmosphere was mainly carbon dioxide. Though once it may have had habitable temperatures, it was believed to have succumbed to a runaway greenhouse effect: As the sun grew brighter, Venus’s ocean began to evaporate, thickening the atmosphere, which forced yet greater evaporation — a self-perpetuating cycle that finally boiled off the ocean entirely and heated the planet’s surface to more than 800 degrees Fahrenheit

At the other extreme, Mars’s thin atmosphere had insufficient carbon dioxide to trap much heat at all, leaving it about 900 degrees colder. Earth lay in the middle, its Goldilocks greenhouse effect just strong enough to support life.

We want to learn more about Earth’s climate, Jim told Anniek — and how humanity can influence it. He would use giant new supercomputers to map the planet’s atmosphere. They would create Mirror Worlds: parallel realities that mimicked our own. These digital simulacra, technically called “general circulation models,” combined the mathematical formulas that governed the behavior of the sea, land and sky into a single computer model. Unlike the real world, they could be sped forward to reveal the future.

The government officials, many of them scientists themselves, tried to suppress their awe of the legends in their presence: Henry Stommel, the world’s leading oceanographer; his protégé, Carl Wunsch, a Jason; the Manhattan Project alumnus Cecil Leith; the Harvard planetary physicist Richard Goody. These were the men who, in the last three decades, had discovered foundational principles underlying the relationships among sun, atmosphere, land and ocean — which is to say, the climate.

When, at Charney’s request, Hansen programmed his model to consider a future of doubled carbon dioxide, it predicted a temperature increase of four degrees Celsius. That was twice as much warming as the prediction made by the most prominent climate modeler, Syukuro Manabe, whose government lab at Princeton was the first to model the greenhouse effect. The difference between the two predictions — between warming of two degrees Celsius and four degrees Celsius — was the difference between damaged coral reefs and no reefs whatsoever, between thinning forests and forests enveloped by desert, between catastrophe and chaos.

The discrepancy between the models, Arakawa concluded, came down to ice and snow. The whiteness of the world’s snowfields reflected light; if snow melted in a warmer climate, less radiation would escape the atmosphere, leading to even greater warming. Shortly before dawn, Arakawa concluded that Manabe had given too little weight to the influence of melting sea ice, while Hansen had overemphasized it. The best estimate lay in between. Which meant that the Jasons’ calculation was too optimistic. When carbon dioxide doubled in 2035 or thereabouts, global temperatures would increase between 1.5 and 4.5 degrees Celsius, with the most likely outcome a warming of three degrees.

within the highest levels of the federal government, the scientific community and the oil-and-gas industry — within the commonwealth of people who had begun to concern themselves with the future habitability of the planet — the Charney report would come to have the authority of settled fact. It was the summation of all the predictions that had come before, and it would withstand the scrutiny of the decades that followed it. Charney’s group had considered everything known about ocean, sun, sea, air and fossil fuels and had distilled it to a single number: three. When the doubling threshold was broached, as appeared inevitable, the world would warm three degrees Celsius

The last time the world was three degrees warmer was during the Pliocene, three million years ago, when beech trees grew in Antarctica, the seas were 80 feet higher and horses galloped across the Canadian coast of the Arctic Ocean.

After the publication of the Charney report, Exxon decided to create its own dedicated carbon-dioxide research program, with an annual budget of $600,000. Only Exxon was asking a slightly different question than Jule Charney. Exxon didn’t concern itself primarily with how much the world would warm. It wanted to know how much of the warming Exxon could be blamed for.

“It behooves us to start a very aggressive defensive program,” Shaw wrote in a memo to a manager, “because there is a good probability that legislation affecting our business will be passed.”

Shaw turned to Wallace Broecker, a Columbia University oceanographer who was the second author of Roger Revelle’s 1965 carbon-dioxide report for Lyndon Johnson. In 1977, in a presentation at the American Geophysical Union, Broecker predicted that fossil fuels would have to be restricted, whether by taxation or fiat. More recently, he had testified before Congress, calling carbon dioxide “the No.1 long-term environmental problem.” If presidents and senators trusted Broecker to tell them the bad news, he was good enough for Exxon.

The company had been studying the carbon-dioxide problem for decades, since before it changed its name to Exxon. In 1957, scientists from Humble Oil published a study tracking “the enormous quantity of carbon dioxide” contributed to the atmosphere since the Industrial Revolution “from the combustion of fossil fuels.” Even then, the observation that burning fossil fuels had increased the concentration of carbon in the atmosphere was well understood and accepted by Humble’s scientists.

The American Petroleum Institute, the industry’s largest trade association, asked the same question in 1958 through its air-pollution study group and replicated the findings made by Humble Oil. So did another A.P.I. study conducted by the Stanford Research Institute a decade later, in 1968, which concluded that the burning of fossil fuels would bring “significant temperature changes” by the year 2000 and ultimately “serious worldwide environmental changes,” including the melting of the Antarctic ice cap and rising seas.

The ritual repeated itself every few years. Industry scientists, at the behest of their corporate bosses, reviewed the problem and found good reasons for alarm and better excuses to do nothing. Why should they act when almost nobody within the United States government — nor, for that matter, within the environmental movement — seemed worried?

Why take on an intractable problem that would not be detected until this generation of employees was safely retired? Worse, the solutions seemed more punitive than the problem itself. Historically, energy use had correlated to economic growth — the more fossil fuels we burned, the better our lives became. Why mess with that?

That June, Jimmy Carter signed the Energy Security Act of 1980, which directed the National Academy of Sciences to start a multiyear, comprehensive study, to be called “Changing Climate,” that would analyze social and economic effects of climate change. More urgent, the National Commission on Air Quality, at the request of Congress, invited two dozen experts, including Henry Shaw himself, to a meeting in Florida to propose climate policy.

On April 3, 1980, Senator Paul Tsongas, a Massachusetts Democrat, held the first congressional hearing on carbon-dioxide buildup in the atmosphere. Gordon MacDonald testified that the United States should “take the initiative” and develop, through the United Nations, a way to coordinate every nation’s energy policies to address the problem.

During the expansion of the Clean Air Act, he pushed for the creation of the National Commission on Air Quality, charged with ensuring that the goals of the act were being met. One such goal was a stable global climate. The Charney report had made clear that goal was not being met, and now the commission wanted to hear proposals for legislation. It was a profound responsibility, and the two dozen experts invited to the Pink Palace — policy gurus, deep thinkers, an industry scientist and an environmental activist — had only three days to achieve it, but the utopian setting made everything seem possible

We have less time than we realize, said an M.I.T. nuclear engineer named David Rose, who studied how civilizations responded to large technological crises. “People leave their problems until the 11th hour, the 59th minute,” he said. “And then: ‘Eloi, Eloi, Lama Sabachthani?’ ” — “My God, my God, why hast thou forsaken me?”

The attendees seemed to share a sincere interest in finding solutions. They agreed that some kind of international treaty would ultimately be needed to keep atmospheric carbon dioxide at a safe level. But nobody could agree on what that level was.

William Elliott, a NOAA scientist, introduced some hard facts: If the United States stopped burning carbon that year, it would delay the arrival of the doubling threshold by only five years. If Western nations somehow managed to stabilize emissions, it would forestall the inevitable by only eight years. The only way to avoid the worst was to stop burning coal. Yet China, the Soviet Union and the United States, by far the world’s three largest coal producers, were frantically accelerating extraction.

“Do we have a problem?” asked Anthony Scoville, a congressional science consultant. “We do, but it is not the atmospheric problem. It is the political problem.” He doubted that any scientific report, no matter how ominous its predictions, would persuade politicians to act.

The talk of ending oil production stirred for the first time the gentleman from Exxon. “I think there is a transition period,” Henry Shaw said. “We are not going to stop burning fossil fuels and start looking toward solar or nuclear fusion and so on. We are going to have a very orderly transition from fossil fuels to renewable energy sources.”

What if the problem was that they were thinking of it as a problem? “What I am saying,” Scoville continued, “is that in a sense we are making a transition not only in energy but the economy as a whole.” Even if the coal and oil industries collapsed, renewable technologies like solar energy would take their place. Jimmy Carter was planning to invest $80 billion in synthetic fuel. “My God,” Scoville said, “with $80 billion, you could have a photovoltaics industry going that would obviate the need for synfuels forever!”

nobody could agree what to do. John Perry, a meteorologist who had worked as a staff member on the Charney report, suggested that American energy policy merely “take into account” the risks of global warming, though he acknowledged that a nonbinding measure might seem “intolerably stodgy.” “It is so weak,” Pomerance said, the air seeping out of him, “as to not get us anywhere.”

Scoville pointed out that the United States was responsible for the largest share of global carbon emissions. But not for long. “If we’re going to exercise leadership,” he said, “the opportunity is now.

One way to lead, he proposed, would be to classify carbon dioxide as a pollutant under the Clean Air Act and regulate it as such. This was received by the room like a belch. By Scoville’s logic, every sigh was an act of pollution. Did the science really support such an extreme measure? The Charney report did exactly that, Pomerance said.

Slade, the director of the Energy Department’s carbon-dioxide program, considered the lag a saving grace. If changes did not occur for a decade or more, he said, those in the room couldn’t be blamed for failing to prevent them. So what was the problem?

“Call it whatever.” Besides, Pomerance added, they didn’t have to ban coal tomorrow. A pair of modest steps could be taken immediately to show the world that the United States was serious: the implementation of a carbon tax and increased investment in renewable energy. Then the United States could organize an international summit meeting to address climate change

these two dozen experts, who agreed on the major points and had made a commitment to Congress, could not draft a single paragraph. Hours passed in a hell of fruitless negotiation, self-defeating proposals and impulsive speechifying. Pomerance and Scoville pushed to include a statement calling for the United States to “sharply accelerate international dialogue,” but they were sunk by objections and caveats.

They never got to policy proposals. They never got to the second paragraph. The final statement was signed by only the moderator, who phrased it more weakly than the declaration calling for the workshop in the first place. “The guide I would suggest,” Jorling wrote, “is whether we know enough not to recommend changes in existing policy.”

Pomerance had seen enough. A consensus-based strategy would not work — could not work — without American leadership. And the United States wouldn’t act unless a strong leader persuaded it to do so — someone who would speak with authority about the science, demand action from those in power and risk everything in pursuit of justice.

The meeting ended Friday morning. On Tuesday, four days later, Ronald Reagan was elected president.

‘Otherwise, They’ll Gurgle’ November 1980-September 1981

In the midst of this carnage, the Council on Environmental Quality submitted a report to the White House warning that fossil fuels could “permanently and disastrously” alter Earth’s atmosphere, leading to “a warming of the Earth, possibly with very serious effects.” Reagan did not act on the council’s advice. Instead, his administration considered eliminating the council.

After the election, Reagan considered plans to close the Energy Department, increase coal production on federal land and deregulate surface coal mining. Once in office, he appointed James Watt, the president of a legal firm that fought to open public lands to mining and drilling, to run the Interior Department. “We’re deliriously happy,” the president of the National Coal Association was reported to have said. Reagan preserved the E.P.A. but named as its administrator Anne Gorsuch, an anti-regulation zealot who proceeded to cut the agency’s staff and budget by about a quarter

Reagan “has declared open war on solar energy,” the director of the nation’s lead solar-energy research agency said, after he was asked to resign). Reagan appeared determined to reverse the environmental achievements of Jimmy Carter, before undoing those of Richard Nixon, Lyndon Johnson, John F. Kennedy and, if he could get away with it, Theodore Roosevelt.

When Reagan considered closing the Council on Environmental Quality, its acting chairman, Malcolm Forbes Baldwin, wrote to the vice president and the White House chief of staff begging them to reconsider; in a major speech the same week, “A Conservative’s Program for the Environment,” Baldwin argued that it was “time for today’s conservatives explicitly to embrace environmentalism.” Environmental protection was not only good sense. It was good business. What could be more conservative than an efficient use of resources that led to fewer federal subsidies?

Meanwhile the Charney report continued to vibrate at the periphery of public consciousness. Its conclusions were confirmed by major studies from the Aspen Institute, the International Institute for Applied Systems Analysis near Vienna and the American Association for the Advancement of Science. Every month or so, nationally syndicated articles appeared summoning apocalypse: “Another Warning on ‘Greenhouse Effect,’ ” “Global Warming Trend ‘Beyond Human Experience,’ ” “Warming Trend Could ‘Pit Nation Against Nation.’

Pomerance read on the front page of The New York Times on Aug. 22, 1981, about a forthcoming paper in Science by a team of seven NASA scientists. They had found that the world had already warmed in the past century. Temperatures hadn’t increased beyond the range of historical averages, but the scientists predicted that the warming signal would emerge from the noise of routine weather fluctuations much sooner than previously expected. Most unusual of all, the paper ended with a policy recommendation: In the coming decades, the authors wrote, humankind should develop alternative sources of energy and use fossil fuels only “as necessary.” The lead author was James Hansen.

Pomerance listened and watched. He understood Hansen’s basic findings well enough: Earth had been warming since 1880, and the warming would reach “almost unprecedented magnitude” in the next century, leading to the familiar suite of terrors, including the flooding of a 10th of New Jersey and a quarter of Louisiana and Florida. But Pomerance was excited to find that Hansen could translate the complexities of atmospheric science into plain English.

7. ‘We’re All Going to Be the Victims’ March 1982

Gore had learned about climate change a dozen years earlier as an undergraduate at Harvard, when he took a class taught by Roger Revelle. Humankind was on the brink of radically transforming the global atmosphere, Revelle explained, drawing Keeling’s rising zigzag on the blackboard, and risked bringing about the collapse of civilization. Gore was stunned: Why wasn’t anyone talking about this?

Most in Congress considered the science committee a legislative backwater, if they considered it at all; this made Gore’s subcommittee, which had no legislative authority, an afterthought to an afterthought. That, Gore vowed, would change. Environmental and health stories had all the elements of narrative drama: villains, victims and heroes. In a hearing, you could summon all three, with the chairman serving as narrator, chorus and moral authority. He told his staff director that he wanted to hold a hearing every week.

The Revelle hearing went as Grumbly had predicted. The urgency of the issue was lost on Gore’s older colleagues, who drifted in and out while the witnesses testified. There were few people left by the time the Brookings Institution economist Lester Lave warned that humankind’s profligate exploitation of fossil fuels posed an existential test to human nature. “Carbon dioxide stands as a symbol now of our willingness to confront the future,” he said. “It will be a sad day when we decide that we just don’t have the time or thoughtfulness to address those issues.”

That night, the news programs featured the resolution of the baseball strike, the ongoing budgetary debate and the national surplus of butter.

There emerged, despite the general comity, a partisan divide. Unlike the Democrats, the Republicans demanded action. “Today I have a sense of déjà vu,” said Robert Walker, a Republican from Pennsylvania. In each of the last five years, he said, “we have been told and told and told that there is a problem with the increasing carbon dioxide in the atmosphere. We all accept that fact, and we realize that the potential consequences are certainly major in their impact on mankind.” Yet they had failed to propose a single law. “Now is the time,” he said. “The research is clear. It is up to us now to summon the political will.”

Hansen flew to Washington to testify on March 25, 1982, performing before a gallery even more thinly populated than at Gore’s first hearing on the greenhouse effect. Gore began by attacking the Reagan administration for cutting funding for carbon-dioxide research despite the “broad consensus in the scientific community that the greenhouse effect is a reality.” William Carney, a Republican from New York, bemoaned the burning of fossil fuels and argued passionately that science should serve as the basis for legislative policy

the experts invited by Gore agreed with the Republicans: The science was certain enough. Melvin Calvin, a Berkeley chemist who won the Nobel Prize for his work on the carbon cycle, said that it was useless to wait for stronger evidence of warming. “You cannot do a thing about it when the signals are so big that they come out of the noise,” he said. “You have to look for early warning signs.”

Hansen’s job was to share the warning signs, to translate the data into plain English. He explained a few discoveries that his team had made — not with computer models but in libraries. By analyzing records from hundreds of weather stations, he found that the surface temperature of the planet had already increased four-tenths of a degree Celsius in the previous century. Data from several hundred tide-gauge stations showed that the oceans had risen four inches since the 1880s

It occurred to Hansen that this was the only political question that mattered: How long until the worst began? It was not a question on which geophysicists expended much effort; the difference between five years and 50 years in the future was meaningless in geologic time. Politicians were capable of thinking only in terms of electoral time: six years, four years, two years. But when it came to the carbon problem, the two time schemes were converging.

“Within 10 or 20 years,” Hansen said, “we will see climate changes which are clearly larger than the natural variability.” James Scheuer wanted to make sure he understood this correctly. No one else had predicted that the signal would emerge that quickly. “If it were one or two degrees per century,” he said, “that would be within the range of human adaptability. But we are pushing beyond the range of human adaptability.” “Yes,” Hansen said.

How soon, Scheuer asked, would they have to change the national model of energy production? Hansen hesitated — it wasn’t a scientific question. But he couldn’t help himself. He had been irritated, during the hearing, by all the ludicrous talk about the possibility of growing more trees to offset emissions. False hopes were worse than no hope at all: They undermined the prospect of developing real solutions. “That time is very soon,” Hansen said finally. “My opinion is that it is past,” Calvin said, but he was not heard because he spoke from his seat. He was told to speak into the microphone. “It is already later,” Calvin said, “than you think.”

From Gore’s perspective, the hearing was an unequivocal success. That night Dan Rather devoted three minutes of “CBS Evening News” to the greenhouse effect. A correspondent explained that temperatures had increased over the previous century, great sheets of pack ice in Antarctica were rapidly melting, the seas were rising; Calvin said that “the trend is all in the direction of an impending catastrophe”; and Gore mocked Reagan for his shortsightedness. Later, Gore could take credit for protecting the Energy Department’s carbon-dioxide program, which in the end was largely preserved.

8. ‘The Direction of an Impending Catastrophe’ 1982

Following Henry Shaw’s recommendation to establish credibility ahead of any future legislative battles, Exxon had begun to spend conspicuously on global-warming research. It donated tens of thousands of dollars to some of the most prominent research efforts, including one at Woods Hole led by the ecologist George Woodwell, who had been calling for major climate policy as early as the mid-1970s, and an international effort coordinated by the United Nations. Now Shaw offered to fund the October 1982 symposium on climate change at Columbia’s Lamont-Doherty campus.

David boasted that Exxon would usher in a new global energy system to save the planet from the ravages of climate change. He went so far as to argue that capitalism’s blind faith in the wisdom of the free market was “less than satisfying” when it came to the greenhouse effect. Ethical considerations were necessary, too. He pledged that Exxon would revise its corporate strategy to account for climate change, even if it were not “fashionable” to do so. As Exxon had already made heavy investments in nuclear and solar technology, he was “generally upbeat” that Exxon would “invent” a future of renewable energy.

Hansen had reason to feel upbeat himself. If the world’s largest oil-and-gas company supported a new national energy model, the White House would not stand in its way. The Reagan administration was hostile to change from within its ranks. But it couldn’t be hostile to Exxon.

The carbon-dioxide issue was beginning to receive major national attention — Hansen’s own findings had become front-page news, after all. What started as a scientific story was turning into a political story.

The political realm was itself a kind of Mirror World, a parallel reality that crudely mimicked our own. It shared many of our most fundamental laws, like the laws of gravity and inertia and publicity. And if you applied enough pressure, the Mirror World of politics could be sped forward to reveal a new future. Hansen was beginning to understand that too.

1. ‘Caution, Not Panic’ 1983-1984

in the fall of 1983, the climate issue entered an especially long, dark winter. And all because of a single report that had done nothing to change the state of climate science but transformed the state of climate politics.

After the publication of the Charney report in 1979, Jimmy Carter had directed the National Academy of Sciences to prepare a comprehensive, $1 million analysis of the carbon-dioxide problem: a Warren Commission for the greenhouse effect. A team of scientist-dignitaries — among them Revelle, the Princeton modeler Syukuro Manabe and the Harvard political economist Thomas Schelling, one of the intellectual architects of Cold War game theory — would review the literature, evaluate the consequences of global warming for the world order and propose remedies

Then Reagan won the White House.

the incipient report served as the Reagan administration’s answer to every question on the subject. There could be no climate policy, Fred Koomanoff and his associates said, until the academy ruled. In the Mirror World of the Reagan administration, the warming problem hadn’t been abandoned at all. A careful, comprehensive solution was being devised. Everyone just had to wait for the academy’s elders to explain what it was.

The committee’s chairman, William Nierenberg — a Jason, presidential adviser and director of Scripps, the nation’s pre-eminent oceanographic institution — argued that action had to be taken immediately, before all the details could be known with certainty, or else it would be too late.

Better to bet on American ingenuity to save the day. Major interventions in national energy policy, taken immediately, might end up being more expensive, and less effective, than actions taken decades in the future, after more was understood about the economic and social consequences of a warmer planet. Yes, the climate would change, mostly for the worst, but future generations would be better equipped to change with it.

Government officials who knew Nierenberg were not surprised by his conclusions: He was an optimist by training and experience, a devout believer in the doctrine of American exceptionalism, one of the elite class of scientists who had helped the nation win a global war, invent the most deadly weapon conceivable and create the booming aerospace and computer industries. America had solved every existential problem it had confronted over the previous generation; it would not be daunted by an excess of carbon dioxide. Nierenberg had also served on Reagan’s transition team. Nobody believed that he had been directly influenced by his political connections, but his views — optimistic about the saving graces of market forces, pessimistic about the value of government regulation — reflected all the ardor of his party.

That’s what Nierenberg wrote in “Changing Climate.” But it’s not what he said in the press interviews that followed. He argued the opposite: There was no urgent need for action. The public should not entertain the most “extreme negative speculations” about climate change (despite the fact that many of those speculations appeared in his report). Though “Changing Climate” urged an accelerated transition to renewable fuels, noting that it would take thousands of years for the atmosphere to recover from the damage of the last century, Nierenberg recommended “caution, not panic.” Better to wait and see

The damage of “Changing Climate” was squared by the amount of attention it received. Nierenberg’s speech in the Great Hall, being one-500th the length of the actual assessment, received 500 times the press coverage. As The Wall Street Journal put it, in a line echoed by trade journals across the nation: “A panel of top scientists has some advice for people worried about the much-publicized warming of the Earth’s climate: You can cope.”

On “CBS Evening News,” Dan Rather said the academy had given “a cold shoulder” to a grim, 200-page E.P.A. assessment published earlier that week (titled “Can We Delay a Greenhouse Warming?”; the E.P.A.’s answer, reduced to a word, was no). The Washington Post described the two reports, taken together, as “clarion calls to inaction.

George Keyworth II, Reagan’s science adviser. Keyworth used Nierenberg’s optimism as reason to discount the E.P.A.’s “unwarranted and unnecessarily alarmist” report and warned against taking any “near-term corrective action” on global warming. Just in case it wasn’t clear, Keyworth added, “there are no actions recommended other than continued research.”

Edward David Jr., two years removed from boasting of Exxon’s commitment to transforming global energy policy, told Science that the corporation had reconsidered. “Exxon has reverted to being mainly a supplier of conventional hydrocarbon fuels — petroleum products, natural gas and steam coal,” David said. The American Petroleum Institute canceled its own carbon-dioxide research program, too.

Exxon soon revised its position on climate-change research. In a presentation at an industry conference, Henry Shaw cited “Changing Climate” as evidence that “the general consensus is that society has sufficient time to technologically adapt to a CO₂ greenhouse effect.” If the academy had concluded that regulations were not a serious option, why should Exxon protest

2. ‘You Scientists Win’ 1985

3. The Size of The Human Imagination Spring-Summer 1986

Curtis Moore’s proposal: Use ozone to revive climate. The ozone hole had a solution — an international treaty, already in negotiation. Why not hitch the milk wagon to the bullet train? Pomerance was skeptical. The problems were related, sure: Without a reduction in CFC emissions, you didn’t have a chance of averting cataclysmic global warming. But it had been difficult enough to explain the carbon issue to politicians and journalists; why complicate the sales pitch? Then again, he didn’t see what choice he had. The Republicans controlled the Senate, and Moore was his connection to the Senate’s environmental committee.

Pomerance met with Senator John Chafee, a Republican from Rhode Island, and helped persuade him to hold a double-barreled hearing on the twin problems of ozone and carbon dioxide on June 10 and 11, 1986

F.Sherwood Rowland, Robert Watson, a NASA scientist, and Richard Benedick, the administration’s lead representative in international ozone negotiations, would discuss ozone; James Hansen, Al Gore, the ecologist George Woodwell and Carl Wunsch, a veteran of the Charney group, would testify about climate change.

As Pomerance had hoped, fear about the ozone layer ensured a bounty of press coverage for the climate-change testimony. But as he had feared, it caused many people to conflate the two crises. One was Peter Jennings, who aired the video on ABC’s “World News Tonight,” warning that the ozone hole “could lead to flooding all over the world, also to drought and to famine.”

The confusion helped: For the first time since the “Changing Climate” report, global-warming headlines appeared by the dozen. William Nierenberg’s “caution, not panic” line was inverted. It was all panic without a hint of caution: “A Dire Forecast for ‘Greenhouse’ Earth” (the front page of The Washington Post); “Scientists Predict Catastrophes in Growing Global Heat Wave” (Chicago Tribune); “Swifter Warming of Globe Foreseen” (The New York Times).

After three years of backsliding and silence, Pomerance was exhilarated to see interest in the issue spike overnight. Not only that: A solution materialized, and a moral argument was passionately articulated — by Rhode Island’s Republican senator no less. “Ozone depletion and the greenhouse effect can no longer be treated solely as important scientific questions,” Chafee said. “They must be seen as critical problems facing the nations of the world, and they are problems that demand solutions.”

The old canard about the need for more research was roundly mocked — by Woodwell, by a W.R.I. colleague named Andrew Maguire, by Senator George Mitchell, a Democrat from Maine. “Scientists are never 100 percent certain,” the Princeton historian Theodore Rabb testified. “That notion of total certainty is something too elusive ever to be sought.” As Pomerance had been saying since 1979, it was past time to act. Only now the argument was so broadly accepted that nobody dared object.

The ozone hole, Pomerance realized, had moved the public because, though it was no more visible than global warming, people could be made to see it. They could watch it grow on video. Its metaphors were emotionally wrought: Instead of summoning a glass building that sheltered plants from chilly weather (“Everything seems to flourish in there”), the hole evoked a violent rending of the firmament, inviting deathly radiation. Americans felt that their lives were in danger. An abstract, atmospheric problem had been reduced to the size of the human imagination. It had been made just small enough, and just large enough, to break through.

Four years after “Changing Climate,” two years after a hole had torn open the firmament and a month after the United States and more than three dozen other nations signed a treaty to limit use of CFCs, the climate-change corps was ready to celebrate. It had become conventional wisdom that climate change would follow ozone’s trajectory. Reagan’s E.P.A. administrator, Lee M. Thomas, said as much the day he signed the Montreal Protocol on Substances That Deplete the Ozone Layer (the successor to the Vienna Convention), telling reporters that global warming was likely to be the subject of a future international agreement

Congress had already begun to consider policy — in 1987 alone, there were eight days of climate hearings, in three committees, across both chambers of Congress; Senator Joe Biden, a Delaware Democrat, had introduced legislation to establish a national climate-change strategy. And so it was that Jim Hansen found himself on Oct. 27 in the not especially distinguished ballroom of the Quality Inn on New Jersey Avenue, a block from the Capitol, at “Preparing for Climate Change,” which was technically a conference but felt more like a wedding.

John Topping was an old-line Rockefeller Republican, a Commerce Department lawyer under Nixon and an E.P.A. official under Reagan. He first heard about the climate problem in the halls of the E.P.A. in 1982 and sought out Hansen, who gave him a personal tutorial. Topping was amazed to discover that out of the E.P.A.’s 13,000-person staff, only seven people, by his count, were assigned to work on climate, though he figured it was more important to the long-term security of the nation than every other environmental issue combined.

Glancing around the room, Jim Hansen could chart, like an arborist counting rings on a stump, the growth of the climate issue over the decade. Veterans like Gordon MacDonald, George Woodwell and the environmental biologist Stephen Schneider stood at the center of things. Former and current staff members from the congressional science committees (Tom Grumbly, Curtis Moore, Anthony Scoville) made introductions to the congressmen they advised. Hansen’s owlish nemesis Fred Koomanoff was present, as were his counterparts from the Soviet Union and Western Europe. Rafe Pomerance’s cranium could be seen above the crowd, but unusually he was surrounded by colleagues from other environmental organizations that until now had shown little interest in a diffuse problem with no proven fund-raising record. The party’s most conspicuous newcomers, however, the outermost ring, were the oil-and-gas executives.

That evening, as a storm spat and coughed outside, Rafe Pomerance gave one of his exhortative speeches urging cooperation among the various factions, and John Chafee and Roger Revelle received awards; introductions were made and business cards earnestly exchanged. Not even a presentation by Hansen of his research could sour the mood. The next night, on Oct. 28, at a high-spirited dinner party in Topping’s townhouse on Capitol Hill, the oil-and-gas men joked with the environmentalists, the trade-group representatives chatted up the regulators and the academics got merrily drunk. Mikhail Budyko, the don of the Soviet climatologists, settled into an extended conversation about global warming with Topping’s 10-year-old son. It all seemed like the start of a grand bargain, a uniting of factions — a solution.

Hansen was accustomed to the bureaucratic nuisances that attended testifying before Congress; before a hearing, he had to send his formal statement to NASA headquarters, which forwarded it to the White House’s Office of Management and Budget for approval. “Major greenhouse climate changes are a certainty,” he had written. “By the 2010s [in every scenario], essentially the entire globe has very substantial warming.”

By all appearances, plans for major policy continued to advance rapidly. After the Johnston hearing, Timothy Wirth, a freshman Democratic senator from Colorado on the energy committee, began to plan a comprehensive package of climate-change legislation — a New Deal for global warming. Wirth asked a legislative assistant, David Harwood, to consult with experts on the issue, beginning with Rafe Pomerance, in the hope of converting the science of climate change into a new national energy policy.

In March 1988, Wirth joined 41 other senators, nearly half of them Republicans, to demand that Reagan call for an international treaty modeled after the ozone agreement. Because the United States and the Soviet Union were the world’s two largest contributors of carbon emissions, responsible for about one-third of the world total, they should lead the negotiations. Reagan agreed. In May, he signed a joint statement with Mikhail Gorbachev that included a pledge to cooperate on global warming.

Al Gore himself had, for the moment, withdrawn his political claim to the issue. In 1987, at the age of 39, Gore announced that he was running for president, in part to bring attention to global warming, but he stopped emphasizing it after the subject failed to captivate New Hampshire primary voters.

5. ‘You Will See Things That You Shall Believe’ Summer 1988

It was the hottest and driest summer in history. Everywhere you looked, something was bursting into flames. Two million acres in Alaska incinerated, and dozens of major fires scored the West. Yellowstone National Park lost nearly one million acres. Smoke was visible from Chicago, 1,600 miles away.

In Nebraska, suffering its worst drought since the Dust Bowl, there were days when every weather station registered temperatures above 100 degrees. The director of the Kansas Department of Health and Environment warned that the drought might be the dawning of a climatic change that within a half century could turn the state into a desert.

On June 22 in Washington, where it hit 100 degrees, Rafe Pomerance received a call from Jim Hansen, who was scheduled to testify the following morning at a Senate hearing called by Timothy Wirth. “I hope we have good media coverage tomorrow,” Hansen said.

Hansen had just received the most recent global temperature data. Just over halfway into the year, 1988 was setting records. Already it had nearly clinched the hottest year in history. Ahead of schedule, the signal was emerging from the noise. “I’m going to make a pretty strong statement,” Hansen said.

Hansen returned to his testimony. He wrote: “The global warming is now large enough that we can ascribe with a high degree of confidence a cause-and-effect relationship to the greenhouse effect.” He wrote: “1988 so far is so much warmer than 1987, that barring a remarkable and improbable cooling, 1988 will be the warmest year on record.” He wrote: “The greenhouse effect has been detected, and it is changing our climate now.”

“We have only one planet,” Senator Bennett Johnston intoned. “If we screw it up, we have no place to go.” Senator Max Baucus, a Democrat from Montana, called for the United Nations Environment Program to begin preparing a global remedy to the carbon-dioxide problem. Senator Dale Bumpers, a Democrat of Arkansas, previewed Hansen’s testimony, saying that it “ought to be cause for headlines in every newspaper in America tomorrow morning.” The coverage, Bumpers emphasized, was a necessary precursor to policy. “Nobody wants to take on any of the industries that produce the things that we throw up into the atmosphere,” he said. “But what you have are all these competing interests pitted against our very survival.”

Hansen, wiping his brow, spoke without affect, his eyes rarely rising from his notes. The warming trend could be detected “with 99 percent confidence,” he said. “It is changing our climate now.” But he saved his strongest comment for after the hearing, when he was encircled in the hallway by reporters. “It is time to stop waffling so much,” he said, “and say that the evidence is pretty strong that the greenhouse effect is here.”

The press followed Bumpers’s advice. Hansen’s testimony prompted headlines in dozens of newspapers across the country, including The New York Times, which announced, across the top of its front page: “Global Warming Has Begun, Expert Tells Senate.”

Rafe Pomerance called his allies on Capitol Hill, the young staff members who advised politicians, organized hearings, wrote legislation. We need to finalize a number, he told them, a specific target, in order to move the issue — to turn all this publicity into policy. The Montreal Protocol had called for a 50 percent reduction in CFC emissions by 1998. What was the right target for carbon emissions? It wasn’t enough to exhort nations to do better. That kind of talk might sound noble, but it didn’t change investments or laws. They needed a hard goal — something ambitious but reasonable. And they needed it soon: Just four days after Hansen’s star turn, politicians from 46 nations and more than 300 scientists would convene in Toronto at the World Conference on the Changing Atmosphere, an event described by Philip Shabecoff of The New York Times as “Woodstock for climate change.”

Pomerance had a proposal: a 20 percent reduction in carbon emissions by 2000. Ambitious, Harwood said. In all his work planning climate policy, he had seen no assurance that such a steep drop in emissions was possible. Then again, 2000 was more than a decade off, so it allowed for some flexibility.

Mintzer pointed out that a 20 percent reduction was consistent with the academic literature on energy efficiency. Various studies over the years had shown that you could improve efficiency in most energy systems by roughly 20 percent if you adopted best practices.

Of course, with any target, you had to take into account the fact that the developing world would inevitably consume much larger quantities of fossil fuels by 2000. But those gains could be offset by a wider propagation of the renewable technologies already at hand — solar, wind, geothermal. It was not a rigorous scientific analysis, Mintzer granted, but 20 percent sounded plausible. We wouldn’t need to solve cold fusion or ask Congress to repeal the law of gravity. We could manage it with the knowledge and technology we already had.

Besides, Pomerance said, 20 by 2000 sounds good.

The conference’s final statement, signed by all 400 scientists and politicians in attendance, repeated the demand with a slight variation: a 20 percent reduction in carbon emissions by 2005. Just like that, Pomerance’s best guess became global diplomatic policy.

Hansen, emerging from Anniek’s successful cancer surgery, took it upon himself to start a one-man public information campaign. He gave news conferences and was quoted in seemingly every article about the issue; he even appeared on television with homemade props. Like an entrant at an elementary-school science fair, he made “loaded dice” out of sections of cardboard and colored paper to illustrate the increased likelihood of hotter weather in a warmer climate. Public awareness of the greenhouse effect reached a new high of 68 percent

global warming became a major subject of the presidential campaign. While Michael Dukakis proposed tax incentives to encourage domestic oil production and boasted that coal could satisfy the nation’s energy needs for the next three centuries, George Bush took advantage. “I am an environmentalist,” he declared on the shore of Lake Erie, the first stop on a five-state environmental tour that would take him to Boston Harbor, Dukakis’s home turf. “Those who think we are powerless to do anything about the greenhouse effect,” he said, “are forgetting about the White House effect.”

His running mate emphasized the ticket’s commitment to the issue at the vice-presidential debate. “The greenhouse effect is an important environmental issue,” Dan Quayle said. “We need to get on with it. And in a George Bush administration, you can bet that we will.”

This kind of talk roused the oil-and-gas men. “A lot of people on the Hill see the greenhouse effect as the issue of the 1990s,” a gas lobbyist told Oil & Gas Journal. Before a meeting of oil executives shortly after the “environmentalist” candidate won the election, Representative Dick Cheney, a Wyoming Republican, warned, “It’s going to be very difficult to fend off some kind of gasoline tax.” The coal industry, which had the most to lose from restrictions on carbon emissions, had moved beyond denial to resignation. A spokesman for the National Coal Association acknowledged that the greenhouse effect was no longer “an emerging issue. It is here already, and we’ll be hearing more and more about it.”

By the end of the year, 32 climate bills had been introduced in Congress, led by Wirth’s omnibus National Energy Policy Act of 1988. Co-sponsored by 13 Democrats and five Republicans, it established as a national goal an “International Global Agreement on the Atmosphere by 1992,” ordered the Energy Department to submit to Congress a plan to reduce energy use by at least 2 percent a year through 2005 and directed the Congressional Budget Office to calculate the feasibility of a carbon tax. A lawyer for the Senate energy committee told an industry journal that lawmakers were “frightened” by the issue and predicted that Congress would eventually pass significant legislation after Bush took office

The other great powers refused to wait. The German Parliament created a special commission on climate change, which concluded that action had to be taken immediately, “irrespective of any need for further research,” and that the Toronto goal was inadequate; it recommended a 30 percent reduction of carbon emissions

Margaret Thatcher, who had studied chemistry at Oxford, warned in a speech to the Royal Society that global warming could “greatly exceed the capacity of our natural habitat to cope” and that “the health of the economy and the health of our environment are totally dependent upon each other.”

The prime ministers of Canada and Norway called for a binding international treaty on the atmosphere; Sweden’s Parliament went further, announcing a national strategy to stabilize emissions at the 1988 level and eventually imposing a carbon tax

the United Nations unanimously endorsed the establishment, by the World Meteorological Organization and the United Nations Environment Program, of an Intergovernmental Panel on Climate Change, composed of scientists and policymakers, to conduct scientific assessments and develop global climate policy.

One of the I.P.C.C.’s first sessions to plan an international treaty was hosted by the State Department, 10 days after Bush’s inauguration. James Baker chose the occasion to make his first speech as secretary of state. “We can probably not afford to wait until all of the uncertainties about global climate change have been resolved,” he said. “Time will not make the problem go away.”

: On April 14, 1989, a bipartisan group of 24 senators, led by the majority leader, George Mitchell, requested that Bush cut emissions in the United States even before the I.P.C.C.’s working group made its recommendation. “We cannot afford the long lead times associated with a comprehensive global agreement,” the senators wrote. Bush had promised to combat the greenhouse effect with the White House effect. The self-proclaimed environmentalist was now seated in the Oval Office. It was time.

8. ‘You Never Beat The White House’ April 1989

After Jim Baker gave his boisterous address to the I.P.C.C. working group at the State Department, he received a visit from John Sununu, Bush’s chief of staff. Leave the science to the scientists, Sununu told Baker. Stay clear of this greenhouse-effect nonsense. You don’t know what you’re talking about. Baker, who had served as Reagan’s chief of staff, didn’t speak about the subject again.

despite his reputation as a political wolf, he still thought of himself as a scientist — an “old engineer,” as he was fond of putting it, having earned a Ph.D. in mechanical engineering from M.I.T. decades earlier. He lacked the reflexive deference that so many of his political generation reserved for the class of elite government scientists.

Since World War II, he believed, conspiratorial forces had used the imprimatur of scientific knowledge to advance an “anti-growth” doctrine. He reserved particular disdain for Paul Ehrlich’s “The Population Bomb,” which prophesied that hundreds of millions of people would starve to death if the world took no step to curb population growth; the Club of Rome, an organization of European scientists, heads of state and economists, which similarly warned that the world would run out of natural resources; and as recently as the mid-’70s, the hypothesis advanced by some of the nation’s most celebrated scientists — including Carl Sagan, Stephen Schneider and Ichtiaque Rasool — that a new ice age was dawning, thanks to the proliferation of man-made aerosols. All were theories of questionable scientific merit, portending vast, authoritarian remedies to halt economic progress.

When Mead talked about “far-reaching” decisions and “long-term consequences,” Sununu heard the marching of jackboots.

Sununu had suspected that the greenhouse effect belonged to this nefarious cabal since 1975, when the anthropologist Margaret Mead convened a symposium on the subject at the National Institute of Environmental Health Sciences.

While Sununu and Darman reviewed Hansen’s statements, the E.P.A. administrator, William K. Reilly, took a new proposal to the White House. The next meeting of the I.P.C.C.’s working group was scheduled for Geneva the following month, in May; it was the perfect occasion, Reilly argued, to take a stronger stand on climate change. Bush should demand a global treaty to reduce carbon emissions.

Sununu wouldn’t budge. He ordered the American delegates not to make any commitment in Geneva. Very soon after that, someone leaked the exchange to the press.

A deputy of Jim Baker pulled Reilly aside. He said he had a message from Baker, who had observed Reilly’s infighting with Sununu. “In the long run,” the deputy warned Reilly, “you never beat the White House.”

9. ‘A Form of Science Fraud’ May 1989

The cameras followed Hansen and Gore into the marbled hallway. Hansen insisted that he wanted to focus on the science. Gore focused on the politics. “I think they’re scared of the truth,” he said. “They’re scared that Hansen and the other scientists are right and that some dramatic policy changes are going to be needed, and they don’t want to face up to it.”

The censorship did more to publicize Hansen’s testimony and the dangers of global warming than anything he could have possibly said. At the White House briefing later that morning, Press Secretary Marlin Fitzwater admitted that Hansen’s statement had been changed. He blamed an official “five levels down from the top” and promised that there would be no retaliation. Hansen, he added, was “an outstanding and distinguished scientist” and was “doing a great job.”

10. The White House Effect Fall 1989

The Los Angeles Times called the censorship “an outrageous assault.” The Chicago Tribune said it was the beginning of “a cold war on global warming,” and The New York Times warned that the White House’s “heavy-handed intervention sends the signal that Washington wants to go slow on addressing the greenhouse problem.”

Darman went to see Sununu. He didn’t like being accused of censoring scientists. They needed to issue some kind of response. Sununu called Reilly to ask if he had any ideas. We could start, Reilly said, by recommitting to a global climate treaty. The United States was the only Western nation on record as opposing negotiations.

Sununu sent a telegram to Geneva endorsing a plan “to develop full international consensus on necessary steps to prepare for a formal treaty-negotiating process. The scope and importance of this issue are so great that it is essential for the U.S. to exercise leadership.”

Sununu seethed at any mention of the subject. He had taken it upon himself to study more deeply the greenhouse effect; he would have a rudimentary, one-dimensional general circulation model installed on his personal desktop computer. He decided that the models promoted by Jim Hansen were a lot of bunk. They were horribly imprecise in scale and underestimated the ocean’s ability to mitigate warming. Sununu complained about Hansen to D. Allan Bromley, a nuclear physicist from Yale who, at Sununu’s recommendation, was named Bush’s science adviser. Hansen’s findings were “technical poppycock” that didn’t begin to justify such wild-eyed pronouncements that “the greenhouse effect is here” or that the 1988 heat waves could be attributed to global warming, let alone serve as the basis for national economic policy.

When a junior staff member in the Energy Department, in a meeting at the White House with Sununu and Reilly, mentioned an initiative to reduce fossil-fuel use, Sununu interrupted her. “Why in the world would you need to reduce fossil-fuel use?” he asked. “Because of climate change,” the young woman replied. “I don’t want anyone in this administration without a scientific background using ‘climate change’ or ‘global warming’ ever again,” he said. “If you don’t have a technical basis for policy, don’t run around making decisions on the basis of newspaper headlines.” After the meeting, Reilly caught up to the staff member in the hallway. She was shaken. Don’t take it personally, Reilly told her. Sununu might have been looking at you, but that was directed at me.

Reilly, for his part, didn’t entirely blame Sununu for Bush’s indecision on the prospect of a climate treaty. The president had never taken a vigorous interest in global warming and was mainly briefed about it by nonscientists. Bush had brought up the subject on the campaign trail, in his speech about the White House effect, after leafing through a briefing booklet for a new issue that might generate some positive press. When Reilly tried in person to persuade him to take action, Bush deferred to Sununu and Baker. Why don’t the three of you work it out, he said. Let me know when you decide

Relations between Sununu and Reilly became openly adversarial. Reilly, Sununu thought, was a creature of the environmental lobby. He was trying to impress his friends at the E.P.A. without having a basic grasp of the science himself.

Pomerance had the sinking feeling that the momentum of the previous year was beginning to flag. The censoring of Hansen’s testimony and the inexplicably strident opposition from John Sununu were ominous signs. So were the findings of a report Pomerance had commissioned, published in September by the World Resources Institute, tracking global greenhouse-gas emissions. The United States was the largest contributor by far, producing nearly a quarter of the world’s carbon emissions, and its contribution was growing faster than that of every other country. Bush’s indecision, or perhaps inattention, had already managed to delay the negotiation of a global climate treaty until 1990 at the earliest, perhaps even 1991. By then, Pomerance worried, it would be too late.

Pomerance tried to be more diplomatic. “The president made a commitment to the American people to deal with global warming,” he told The Washington Post, “and he hasn’t followed it up.” He didn’t want to sound defeated. “There are some good building blocks here,” Pomerance said, and he meant it. The Montreal Protocol on CFCs wasn’t perfect at first, either — it had huge loopholes and weak restrictions. Once in place, however, the restrictions could be tightened. Perhaps the same could happen with climate change. Perhaps. Pomerance was not one for pessimism. As William Reilly told reporters, dutifully defending the official position forced upon him, it was the first time that the United States had formally endorsed the concept of an emissions limit. Pomerance wanted to believe that this was progress.

All week in Noordwijk, Becker couldn’t stop talking about what he had seen in Zeeland. After a flood in 1953, when the sea swallowed much of the region, killing more than 2,000 people, the Dutch began to build the Delta Works, a vast concrete-and-steel fortress of movable barriers, dams and sluice gates — a masterpiece of human engineering. The whole system could be locked into place within 90 minutes, defending the land against storm surge. It reduced the country’s exposure to the sea by 700 kilometers, Becker explained. The United States coastline was about 153,000 kilometers long. How long, he asked, was the entire terrestrial coastline? Because the whole world was going to need this. In Zeeland, he said, he had seen the future.

Ken Caldeira, a climate scientist at the Carnegie Institution for Science in Stanford, Calif., has a habit of asking new graduate students to name the largest fundamental breakthrough in climate physics since 1979. It’s a trick question. There has been no breakthrough. As with any mature scientific discipline, there is only refinement. The computer models grow more precise; the regional analyses sharpen; estimates solidify into observational data. Where there have been inaccuracies, they have tended to be in the direction of understatement.

More carbon has been released into the atmosphere since the final day of the Noordwijk conference, Nov. 7, 1989, than in the entire history of civilization preceding it

Despite every action taken since the Charney report — the billions of dollars invested in research, the nonbinding treaties, the investments in renewable energy — the only number that counts, the total quantity of global greenhouse gas emitted per year, has continued its inexorable rise.

When it comes to our own nation, which has failed to make any binding commitments whatsoever, the dominant narrative for the last quarter century has concerned the efforts of the fossil-fuel industries to suppress science, confuse public knowledge and bribe politicians.

The mustache-twirling depravity of these campaigns has left the impression that the oil-and-gas industry always operated thus; while the Exxon scientists and American Petroleum Institute clerics of the ’70s and ’80s were hardly good Samaritans, they did not start multimillion-dollar disinformation campaigns, pay scientists to distort the truth or try to brainwash children in elementary schools, as their successors would.

It was James Hansen’s testimony before Congress in 1988 that, for the first time since the “Changing Climate” report, made oil-and-gas executives begin to consider the issue’s potential to hurt their profits. Exxon, as ever, led the field. Six weeks after Hansen’s testimony, Exxon’s manager of science and strategy development, Duane LeVine, prepared an internal strategy paper urging the company to “emphasize the uncertainty in scientific conclusions.” This shortly became the default position of the entire sector. LeVine, it so happened, served as chairman of the global petroleum industry’s Working Group on Global Climate Change, created the same year, which adopted Exxon’s position as its own

The American Petroleum Institute, after holding a series of internal briefings on the subject in the fall and winter of 1988, including one for the chief executives of the dozen or so largest oil companies, took a similar, if slightly more diplomatic, line. It set aside money for carbon-dioxide policy — about $100,000, a fraction of the millions it was spending on the health effects of benzene, but enough to establish a lobbying organization called, in an admirable flourish of newspeak, the Global Climate Coalition.

The G.C.C. was conceived as a reactive body, to share news of any proposed regulations, but on a whim, it added a press campaign, to be coordinated mainly by the A.P.I. It gave briefings to politicians known to be friendly to the industry and approached scientists who professed skepticism about global warming. The A.P.I.’s payment for an original op-ed was $2,000.

It was joined by the U.S. Chamber of Commerce and 14 other trade associations, including those representing the coal, electric-grid and automobile industries

In October 1989, scientists allied with the G.C.C. began to be quoted in national publications, giving an issue that lacked controversy a convenient fulcrum. “Many respected scientists say the available evidence doesn’t warrant the doomsday warnings,” was the caveat that began to appear in articles on climate change.

The following year, when President Bill Clinton proposed an energy tax in the hope of meeting the goals of the Rio treaty, the A.P.I. invested $1.8 million in a G.C.C. disinformation campaign. Senate Democrats from oil-and-coal states joined Republicans to defeat the tax proposal, which later contributed to the Republicans’ rout of Democrats in the midterm congressional elections in 1994 — the first time the Republican Party had won control of both houses in 40 years

The G.C.C. spent $13 million on a single ad campaign intended to weaken support for the 1997 Kyoto Protocol, which committed its parties to reducing greenhouse-gas emissions by 5 percent relative to 1990 levels. The Senate, which would have had to ratify the agreement, took a pre-emptive vote declaring its opposition; the resolution passed 95-0. There has never been another serious effort to negotiate a binding global climate treaty.

. This has made the corporation an especially vulnerable target for the wave of compensatory litigation that began in earnest in the last three years and may last a generation. Tort lawsuits have become possible only in recent years, as scientists have begun more precisely to attribute regional effects to global emission levels. This is one subfield of climate science that has advanced significantly sin

Pomerance had not been among the 400 delegates invited to Noordwijk. But together with three young activists — Daniel Becker of the Sierra Club, Alden Meyer of the Union of Concerned Scientists and Stewart Boyle from Friends of the Earth — he had formed his own impromptu delegation. Their constituency, they liked to say, was the climate itself. Their mission was to pressure the delegates to include in the final conference statement, which would be used as the basis for a global treaty, the target proposed in Toronto: a 20 percent reduction of greenhouse-gas combustion by 2005. It was the only measure that mattered, the amount of emissions reductions, and the Toronto number was the strongest global target yet proposed.

The delegations would review the progress made by the I.P.C.C. and decide whether to endorse a framework for a global treaty. There was a general sense among the delegates that they would, at minimum, agree to the target proposed by the host, the Dutch environmental minister, more modest than the Toronto number: a freezing of greenhouse-gas emissions at 1990 levels by 2000. Some believed that if the meeting was a success, it would encourage the I.P.C.C. to accelerate its negotiations and reach a decision about a treaty sooner. But at the very least, the world’s environmental ministers should sign a statement endorsing a hard, binding target of emissions reductions. The mood among the delegates was electric, nearly giddy — after more than a decade of fruitless international meetings, they could finally sign an agreement that meant something.

11. ‘The Skunks at The Garden Party’ November 1989

It was nearly freezing — Nov. 6, 1989, on the coast of the North Sea in the Dutch resort town of Noordwijk

Losing Earth: The Decade WeAlmost Stopped Climate Change We knew everything we needed to know, and nothing stood in our way. Nothing, that is, except ourselves. A tragedy in two acts. By Nathaniel RichPhotographs and Videos by George Steinmetz AUG. 1, 2018

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The teams consist of roughly 500 people, more than half of whom are women.

About 40% of the team "represent communities historically underrepresented in the federal government," a transition official said, which includes people of color, individuals who identify as LGBTQ+ and people with disabilities.

"For months, the Biden-Harris transition has laid the groundwork for a Biden-Harris administration, and at the core of that work is an unrelenting commitment to diversity," said Ted Kaufman, co-chair of the Biden-Harris transition. "As we continue working full-speed ahead to Inauguration, our diverse group of leaders and staff are reflective of America -- upholding President-elect Biden and Vice President-elect Harris' belief that through diverse voices we can develop and implement a policy vision to tackle our nation's toughest challenges."

The diversity figures mirror that of Biden's presidential campaign, which in September said 46% of its full-time staff and 40% of its senior staff were people of color.

Biden has repeatedly promised that ensuring diversity in his administration and his Cabinet will be a top priority.

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"He doesn't even understand what DACA is. He's an idiot," Kelly said in one meeting, according to two officials who were present. "We've got to save him from himself."

The Cabinet includes the vice president and the heads of 15 executive departments

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Richmond is expected to leave Congress to join Biden's White House staff in a senior role.

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