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Terrorism, public health, and police violence are all life-and-death issues, and all involve the state, so they’re more consequential than the criticism, shunning, and loss of professional opportunities associated with cancel culture. But that doesn’t mean the latter isn’t a problem.

We can, and should, care about more than one thing at a time, and many things that aren’t the worst problem deserve attention.

Nevertheless, it’s important to assess problems accurately.

Michael Hobbes calls all this worrying about wokeness a “moral panic.” That’s a term some use online to wave away serious concerns, but Hobbes uses it the way sociologist Stanley Cohen did in the 1970s, as a phenomenon where something becomes “defined as a threat to societal values and interests” based on media accounts that “exaggerate the seriousness, extent, typicality and/or inevitability of harm.”

The point here is not that stranger abductions never happened, but that they didn’t happen nearly as much as the media, concerned parents, and lawmakers thought. And because stranger kidnappings were not a national crisis, but treated as one, the “solution” made things worse.

Along similar lines, Hobbes argues that anti-woke alarm-bell-ringing relies on a relatively small number of oft-repeated anecdotes. Some don’t stand up to scrutiny, and some of those that do are low-stakes. The resulting moral panic fuels, among other things, a wave of red state legislation aimed at banning “critical race theory” that uses vague language and effectively cracks down on teaching about racism in American history.

For that, we should look to data, and here again the problem looks smaller than anti-woke liberals make it out to be

In the universe of cancel culture cases, I find more incidents concerning than Hobbes and fewer concerning than Young, but “this one incident wasn’t actually bad” vs. “yes it really was” doesn’t answer the question about size and scope. It doesn’t tell us what, if anything, society should do about it.

In Liberal Currents, Adam Gurri cites the Foundation for Individual Rights in Education (FIRE), which documented 426 “targeting incidents involving scholars at public and private American institutions of higher education” since 2015 and 492 “disinvitation attempts” since 1998

The organization Canceled People lists 217 cases of “cancellation” since 1991, while the National Association of Scholars (NAS) lists 194 cancellations in academia since 2004 (plus two in the 20th century).

Based on these numbers, Gurri concludes, “If any other problem in social life was occurring at this frequency and at this scale, we would consider it effectively solved.”

There are nearly 4,000 colleges and universities in the United States. U.S. News’ 2021 rankings of the best schools lists 1,452. Using that smaller number and NAS’s figure of 194 academic cancellations since 2004, the chance of a college or university experiencing a cancellation in a given year is less than 0.8 percent.

There are some concerning cases in the NAS database too, in which professors were fired for actions that should be covered under a basic principle of academic freedom — for example, reading aloud a Mark Twain passage that included a racial slur, even after giving students advance notice — so this isn’t a total non-issue. But the number of low stakes and relatively unobjectionable cases means the risk is lower than 0.8 percent (and it’s even lower than that, since NAS includes Canada and my denominator is ranked schools in the United States).

Similarly, FIRE classifies about 30 percent of the attempted disinvitations in its database as from the right. About 60 percent are from the left — the other 10 percent N/A — so if you want to argue that the left does this more, you’ve got some evidence. But still, the number of cases from the left is lower than the total. And more than half of FIRE’s attempted disinvitations did not result in anyone getting disinvited.

Using U.S. News’ ranked schools as the denominator, the chance of left-wing protestors trying to get a speaker disinvited at a college or university in a given year is about 0.5 percent. The chance of an actual disinvitation is less than 0.25 percent. And that’s in the entire school. To put this in perspective, my political science department alone hosts speakers most weeks of the semester.

Two things jump out here:

Bari Weiss and Anne Applebaum both cite a Cato study purporting to show this effect:

even if we assume these databases capture a fraction of actual instances — which would be surprising, given the media attention on this topic, but even so — the data does not show an illiberal left-wing movement in control of academia.

The number agreeing that the political climate prevents them from saying things they believe ranges from 42% to 77%, which is high across political views. That suggests self-censorship is, to a significant degree, a factor of the political, cultural, and technological environment, rather than caused by any particular ideology.

Conservatives report self-censoring more than liberals do.

The same study shows that the biggest increase in self-censorship from 2017 to 2020 was among strong liberals (+12), while strong conservatives increased the least (+1).

If this data told a story of ascendent Maoists suppressing conservative speech, it would probably be the opposite, with the left becoming more confident of expressing their views — on race, gender, etc. — while the right becomes disproportionately more fearful. Culture warriors fixate on wokeness, but when asked about the political climate, many Americans likely thought about Trumpism

Nevertheless, this data does show conservatives are more likely to say the political climate prevents them from expressing their beliefs. But what it doesn’t show is which beliefs or why.

Self-censoring can be a problem, but also not. The adage “do not discuss politics or religion in general company” goes back to at least 1879. If someone today is too scared to say “Robin DiAngelo’s conception of ‘white fragility’ does not stand up to logical scrutiny,” that’s bad. If they’re too scared to shout racial slurs at minorities, that isn’t. A lot depends on the content of the speech.

When I was a teenager in the 1990s, anti-gay slurs were common insults among boys, and tough-guy talk in movies. Now it’s a lot less common, one of the things pushed out of polite society, like the n-word, Holocaust denial, and sexual harassment. I think that’s a positive.

Another problem with the anti-woke interpretation of the Cato study is media constantly tells conservatives they’re under dire threat.

Fox News, including Tucker Carlson (the most-watched show on basic cable), Ben Shapiro and Dan Bongino (frequently among the most-shared on Facebook), and other right-wing outlets devote tons of coverage to cancel culture, riling up conservatives with hyperbolic claims that people are coming for them

Anti-woke liberals in prestigious mainstream outlets tell them it’s the Cultural Revolution

Then a survey asks if the political climate prevents them from saying what they believe, and, primed by media, they say yes.

With so many writers on the anti-woke beat, it’s not especially plausible that we’re missing many cases of transgender servers getting people canceled for using the wrong pronoun in coffee shops to the point that everyone who isn’t fully comfortable with the terminology should live in fear. By overstating the threat of cancellation and the power of woke activists, anti-woke liberals are chilling speech they aim to protect.

a requirement to both-sides the Holocaust is a plausible read of the legal text. It’s an unsurprising result of empowering the state to suppress ideas in an environment with bad faith culture warriors, such as Chris Rufo and James Lindsay, advocating state censorship and deliberately stoking panic to get it.

Texas, Florida, and other states trying to suppress unwanted ideas in both K-12 and higher ed isn’t the Cultural Revolution either — no state-sanctioned mass violence here — but it’s coming from government, making it a bigger threat to speech and academic freedom.

To put this in perspective, antiracist guru Ibram X. Kendi has called for an “anti-racist Constitutional amendment,” which would “make unconstitutional racial inequity over a certain threshold, as well as racist ideas by public officials,” and establish a Department of Anti-Racism to enforce it. It’s a terrible proposal that would repeal the First Amendment and get the state heavily involved in policing speech (which, even if well-intentioned, comes with serious risks of abuse).

It also doesn’t stand the slightest chance of happening.

It’s fair to characterize this article as anti-anti-woke. And I usually don’t like anti-anti- arguments, especially anti-anti-Trump (because it’s effectively pro). But in this case I’m doing it because I reject the binary.

American politics is often binary.

Culture is not. It’s an ever-changing mishmash, with a large variety of influential participants

There have been unmistakable changes in American culture — Western culture, really — regarding race and gender, but there are way more than two sides to that. You don’t have to be woke or anti-woke. It’s not a political campaign or a war. You can think all sorts of things, mixing and matching from these ideas and others.

I won’t say “this is trivial” nor “this stuff is great,” because I don’t think either. At least not if “this” means uncompromising Maoists seeking domination.

I think that’s bad, but it’s not especially common. It’s not fiction — I’m online a lot, I have feet in both media and academia, I’ve seen it too — but, importantly, it’s not in control

I think government censorship is inherently more concerning than private censorship, and that we can’t sufficiently counter the push for state idea-suppression without countering the overstated fears that rationalize it.

I think a lot of the private censorship problem can be addressed by executives and administrators — the ones who actually have power over businesses and universities — showing a bit of spine. Don’t fold at the first sign of protest. Take some time to look into it yourself, and make a judgment call on whether discipline is merited and necessary. Often, the activist mob will move on in a few days anyway.

I think that, with so much of the conversation focusing on extremes, people often miss when administrators do this.

I think violence is physical, and that while speech can be quite harmful, it’s better to think of these two things as categorically different than to insist harmful speech is literally violence.

at a baseline, treating people as equals means respecting who they say they are. The vast majority are not edge cases like a competitive athlete, but regular people trying to live their lives. Let them use the bathroom in peace.

I think the argument that racism and other forms of bigotry operate at a systemic or institutional, in addition to individual, level is insightful, intuitive, and empirically supported. We can improve people’s lives by taking that into account when crafting laws, policies, and practices.

I think identity and societal structures shape people’s lives (whether they want it to or not) but they’re far from the only factors. Treating them as the only, or even predominant, factor essentializes more than it empowers.

I think transgender and non-binary people have a convincing case for equality. I don’t think that points to clear answers on every question—what’s the point of gender segregated sports?

I think free association is an essential value too. Which inherently includes the right of disassociation.

I think these situations often fall into a gray area, and businesses should be able to make their own judgment calls about personnel, since companies have a reasonable interest in protecting their brand.

I think free speech is an essential value, not just at the legal level, but culturally as well. I think people who would scrap it, from crusading antiracists to social conservatives pining for Viktor Orban’s Hungary, have a naively utopian sense of how that would go (both in general and for them specifically). Getting the state involved in speech suppression is a bad idea.

I think America’s founding was a big step forward for government and individual liberty, and early America was a deeply racist, bigoted place that needed Amendments (13-15; 19), Civil Rights Acts, and landmark court cases to become a liberal democracy. I don’t think it’s hard to hold both of those in your head at the same time.

I think students learning the unvarnished truth about America’s racist past is good, and that teaching students they are personally responsible for the sins of the past is not.

I think synthesis of these cultural forces is both desirable and possible. Way more people think both that bigotry is bad and individual freedom is good than online arguments lead you to believe.

I don’t think the sides are as far apart as they think.

I think we should disaggregate cancel culture and left-wing identity politics. Cancellation should be understood as an internet phenomenon.

If it ever was just something the left does, it isn’t anymore.

I think a lot of us could agree that social media mobbing and professional media attention on minor incidents is wrong, especially as part of a campaign to get someone fired. In general, disproportionally severe social and professional sanctions is a problem, no matter the alleged cause.

I think most anti-woke liberals really do want to defend free speech and academic freedom. But I don’t think their panic-stoking hyperbole is helping.

In other words, AOC can win in NY-14 but AOC-type candidates are no solution at all to the Democrats’ working class problems in most areas of the country. The grim fact is that as education polarization has played out geographically, Democratic votes are now distributed so inefficiently that the translation of these votes into political power has been severely undercut

As a result, Democrats’ hold on political power is ever on a knife’s edge even when their last election was a good one (as it is today).

Consistent with other recent research, the study finds that:

Working-class voters prefer progressive candidates who focus primarily on bread-and-butter economic issues, and who frame those issues in universal terms.

Candidates whose campaigns focused primarily on universalist policy issues such as jobs, health care, and the economy performed better than those who focused on group-specific policies, such as racial justice or immigration.

In addition, woke messaging decreased the appeal of other candidate characteristics. For example, candidates employing woke messaging who championed either centrist or progressive economic, health care, or civil rights policy priorities were viewed less favorably than their counterparts who championed the same priorities but opted for universalist messaging.

easier said than done given Democrats’ recent evolution away from universalist messaging and toward foregrounding the equity effects of unambiguously universal programs and deferring to group specific concerns around race, gender and sexuality, even where they are clearly unpopular and dubious as policy. The result has a been a shift in the Democratic party “brand” that has created barriers to Democratic party voting among broad swathes of the working class.

The grim prospects for the Democrats in 2022 and the gut-wrenching prospect of losing the White House to Donald Trump (again) in 2024 make clear the stakes.

A Democratic brand reset is clearly in order to stop the bleeding among working class voters, along the lines suggested by the Jacobin study. A good way to start would be to embrace widely-held American views and values that are particularly strong among the multiracial working class.

Equality of opportunity is a fundamental American principle; equality of outcome is not.America is not perfect but it is good to be patriotic and proud of the country.

Discrimination and racism are bad but they are not the cause of all disparities in American society.No one is completely without bias but calling all white people racists who benefit from white privilege and American society a white supremacist society is not right or fair.

America benefits from the presence of immigrants and no immigrant, even if illegal, should be mistreated. But border security is still important, as is an enforceable system that fairly decides who can enter the country.Police misconduct and brutality against people of any race is wrong and we need to reform police conduct and recruitment. But crime is a real problem so more and better policing is needed for public safety. That cannot be provided by “defunding the police”.

There are underlying differences between men and women but discrimination on the basis of gender is wrong.There are basically two genders but people who want to live as a gender different from their biological sex should have that right and not be discriminated against. However, there are issues around child consent to transitioning and participation in women’s sports that are complicated and not settled.

Racial achievement gaps are bad and we should seek to close them. However, they are not due just to racism and standards of high achievement should be maintained for people of all races.Language policing has gone too far; by and large, people should be able to express their views without fear of sanction by employer, school, institution or government. Good faith should be assumed, not bad faith.

Besides positively embracing these views it is necessary for major Democratic officeholders and candidates to actively dissociate themselves and their party from the woke stances that contradict these views and tarnish their brand among working class voters. That entails not just saying that one does not endorse now-familiar strands of cultural leftism but in some well-chosen places directly criticizing by name some who hold extreme views that are associated with the Democrats. That will be of great assistance in getting the message through to average working class voters.

these views are entirely consistent with a very progressive Democratic program in the areas of health care, education, social programs, jobs and the economy that would disproportionately benefit the poor and working class, and therefore blacks and Hispanics.

In that sense, one might respond to the inevitable accusation that a universalist, mainstream approach is tantamount to throwing loyal Democratic constituencies in need of help “under the bus”: who is throwing whom under the bus? Perhaps it is those who stand in the way of a Democratic approach that could plausibly generate the widest possible support that are throwing those who need help the most under the bus.

And this approach, unlike the Democrats’ current default setting, has the potential to make the Democrats and their progressive policies consistent winners

imilar increases occurred at the same time for girls in Canada for mood disorders and for self-harm. Girls in the U.K. also experienced very large increases in anxiety, depression, and self-harm (with much smaller increases for boys).

Some have argued that these increases reflect nothing more than Gen Z’s increased willingness to disclose their mental-health problems. But researchers have found corresponding increases in measurable behaviors such as suicide (for both sexes), and emergency-department admissions for self-harm (for girls only). From 2010 to 2014, rates of hospital admission for self-harm did not increase at all for women in their early 20s, or for boys or young men, but they doubled for girls ages 10 to 14.

The available evidence suggests that Facebook’s products have probably harmed millions of girls. If public officials want to make that case, it could go like this:

from 2010 to 2014, high-school students moved much more of their lives onto social-media platforms.

National surveys of American high-school students show that only about 63 percent reported using a “social networking site” on a daily basis back in 2010.

But as smartphone ownership increased, access became easier and visits became more frequent. By 2014, 80 percent of high-school students said they used a social-media platform on a daily basis, and 24 percent said that they were online “almost constantly.”

2. The timing points to social media.

Notably, girls became much heavier users of the new visually oriented platforms, primarily Instagram (which by 2013 had more than 100 million users), followed by Snapchat, Pinterest, and Tumblr.

Boys are glued to their screens as well, but they aren’t using social media as much; they spend far more time playing video games. When a boy steps away from the console, he does not spend the next few hours worrying about what other players are saying about him

Instagram, in contrast, can loom in a girl’s mind even when the app is not open, driving hours of obsessive thought, worry, and shame.

3. The victims point to Instagram.

In 2017, British researchers asked 1,500 teens to rate how each of the major social-media platforms affected them on certain well-being measures, including anxiety, loneliness, body image, and sleep. Instagram scored as the most harmful, followed by Snapchat and then Facebook.

Facebook’s own research, leaked by the whistleblower Frances Haugen, has a similar finding: “Teens blame Instagram for increases in the rate of anxiety and depression … This reaction was unprompted and consistent across all groups.” The researchers also noted that “social comparison is worse” on Instagram than on rival apps.

4. No other suspect is equally plausible.

A recent experiment confirmed these observations: Young women were randomly assigned to use Instagram, use Facebook, or play a simple video game for seven minutes. The researchers found that “those who used Instagram, but not Facebook, showed decreased body satisfaction, decreased positive affect, and increased negative affect.”

Snapchat’s filters “keep the focus on the face,” whereas Instagram “focuses heavily on the body and lifestyle.

(Boys lost less, and may even have gained, when they took up multiplayer fantasy games, especially those that put them into teams.)

The subset of studies that allow researchers to isolate social media, and Instagram in particular, show a much stronger relationship with poor mental health. The same goes for those that zoom in on girls rather than all teens.

In a 2019 internal essay, Andrew Bosworth, a longtime company executive, wrote:While Facebook may not be nicotine I think it is probably like sugar. Sugar is delicious and for most of us there is a special place for it in our lives. But like all things it benefits from moderation.

Bosworth was proposing what medical researchers call a “dose-response relationship.” Sugar, salt, alcohol, and many other substances that are dangerous in large doses are harmless in small ones.

his framing also implies that any health problems caused by social media result from the user’s lack of self-control. That’s exactly what Bosworth concluded: “Each of us must take responsibility for ourselves.” The dose-response frame also points to cheap solutions that pose no threat to its business model. The company can simply offer more tools to help Instagram and Facebook users limit their consumption.

social-media platforms are not like sugar. They don’t just affect the individuals who overindulge. Rather, when teens went from texting their close friends on flip phones in 2010 to posting carefully curated photographs and awaiting comments and likes by 2014, the change rewired everyone’s social life.

Improvements in technology generally help friends connect, but the move onto social-media platforms also made it easier—indeed, almost obligatory––for users to perform for one another.

Public performance is risky. Private conversation is far more playful. A bad joke or poorly chosen word among friends elicits groans, or perhaps a rebuke and a chance to apologize. Getting repeated feedback in a low-stakes environment is one of the main ways that play builds social skills, physical skills, and the ability to properly judge risk. Play also strengthens friendships.

When girls started spending hours each day on Instagram, they lost many of the benefits of play.

First, Congress should pass legislation compelling Facebook, Instagram, and all other social-media platforms to allow academic researchers access to their data. One such bill is the Platform Transparency and Accountability Act, proposed by the Stanford University researcher Nate Persily.

The wrong photo can lead to school-wide or even national infamy, cyberbullying from strangers, and a permanent scarlet letter

Performative social media also puts girls into a trap: Those who choose not to play the game are cut off from their classmates

Instagram and, more recently, TikTok have become wired into the way teens interact, much as the telephone became essential to past generations.

f those platforms. Without a proper control group, we can’t be certain that the experiment has been a catastrophic failure, but it probably has been. Until someone comes up with a more plausible explanation for what has happened to Gen Z girls, the most prudent course of action for regulators, legislators, and parents is to take steps to mitigate the harm.

Correlation does not prove causation, but nobody has yet found an alternative explanation for the massive, sudden, gendered, multinational deterioration of teen mental health during the period in question.

Second, Congress should toughen the 1998 Children’s Online Privacy Protection Act. An early version of the legislation proposed 16 as the age at which children should legally be allowed to give away their data and their privacy.

Unfortunately, e-commerce companies lobbied successfully to have the age of “internet adulthood” set instead at 13. Now, more than two decades later, today’s 13-year-olds are not doing well. Federal law is outdated and inadequate. The age should be raised. More power should be given to parents, less to companies.

Third, while Americans wait for lawmakers to act, parents can work with local schools to establish a norm: Delay entry to Instagram and other social platforms until high school.

Right now, families are trapped. I have heard many parents say that they don’t want their children on Instagram, but they allow them to lie about their age and open accounts because, well, that’s what everyone else has done.

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

For Aristotle, rationality was what separated human beings from animals. For the authors of “The Rationality Quotient,” it’s a mental faculty, parallel to but distinct from intelligence, which involves a person’s ability to juggle many scenarios in her head at once, without letting any one monopolize her attention or bias her against the rest.

In “The Rationality Quotient: Toward a Test of Rational Thinking” (M.I.T.), from 2016, the psychologists Keith E. Stanovich, Richard F. West, and Maggie E. Toplak call rationality “a torturous and tortured term,” in part because philosophers, sociologists, psychologists, and economists have all defined it differently

Galef, who hosts a podcast called “Rationally Speaking” and co-founded the nonprofit Center for Applied Rationality, in Berkeley, barely uses the word “rationality” in her book on the subject. Instead, she describes a “scout mindset,” which can help you “to recognize when you are wrong, to seek out your blind spots, to test your assumptions and change course.” (The “soldier mindset,” by contrast, encourages you to defend your positions at any cost.)

Galef tends to see rationality as a method for acquiring more accurate views.

Pinker, a cognitive and evolutionary psychologist, sees it instrumentally, as “the ability to use knowledge to attain goals.” By this definition, to be a rational person you have to know things, you have to want things, and you have to use what you know to get what you want.

Introspection is key to rationality. A rational person must practice what the neuroscientist Stephen Fleming, in “Know Thyself: The Science of Self-Awareness” (Basic Books), calls “metacognition,” or “the ability to think about our own thinking”—“a fragile, beautiful, and frankly bizarre feature of the human mind.”

A successful student uses metacognition to know when he needs to study more and when he’s studied enough: essentially, parts of his brain are monitoring other parts.

In everyday life, the biggest obstacle to metacognition is what psychologists call the “illusion of fluency.” As we perform increasingly familiar tasks, we monitor our performance less rigorously; this happens when we drive, or fold laundry, and also when we think thoughts we’ve thought many times before

The trick is to break the illusion of fluency, and to encourage an “awareness of ignorance.”

metacognition is a skill. Some people are better at it than others. Galef believes that, by “calibrating” our metacognitive minds, we can improve our performance and so become more rational

There are many calibration methods

nowing about what you know is Rationality 101. The advanced coursework has to do with changes in your knowledge.

Most of us stay informed straightforwardly—by taking in new information. Rationalists do the same, but self-consciously, with an eye to deliberately redrawing their mental maps.

The challenge is that news about distant territories drifts in from many sources; fresh facts and opinions aren’t uniformly significant. In recent decades, rationalists confronting this problem have rallied behind the work of Thomas Bayes

So-called Bayesian reasoning—a particular thinking technique, with its own distinctive jargon—has become de rigueur.

the basic idea is simple. When new information comes in, you don’t want it to replace old information wholesale. Instead, you want it to modify what you already know to an appropriate degree. The degree of modification depends both on your confidence in your preëxisting knowledge and on the value of the new data. Bayesian reasoners begin with what they call the “prior” probability of something being true, and then find out if they need to adjust it.

Bayesian reasoning is an approach to statistics, but you can use it to interpret all sorts of new information.

Attempting to ease tensions with China to make cooperation on global public health possible won’t work, partly because Beijing cannot credibly commit to being more transparent and cooperative in the future.

Xi did not want to facilitate an international response to COVID-19 that could have attributed blame to China or isolated it through travel restrictions, either of which might have damaged the regime’s domestic legitimacy. Instead, Xi leveraged the pandemic to his advantage: China’s suppression of the virus became a matter of national pride, held up by Beijing in sharp contrast to the experience of the United States.

But in case cooperation fails, it must have a backup plan to rally allies and partners to provide a much greater share of global public goods, even if that means shouldering more of the costs.

as a number of U.S. embassy officials told the foreign policy analyst Colin Kahl and me for our book Aftershocks, this team’s cooperation with the Chinese government became more challenging as U.S.-Chinese rivalry intensified, largely because of China’s actions.

When COVID-19 hit, the Chinese Communist Party (CCP) maintained near-absolute secrecy. All channels of communication between Beijing and Washington went silent, as they did between Beijing and other governments. Chinese leaders sought to conceal vital information about the emerging epidemic in China from the rest of the world, even attempting to prevent Chinese scientists from sharing the genetic sequence of the virus with scientists in other countries.

It is impossible to say for certain why the Chinese government behaved the way it did, but secrecy and control make sense in light of what the vast majority of China experts believe to be Xi’s top priority: regime survival.

For China’s leaders, the pandemic revealed the inexorable decline of the West, confirmed Beijing’s power and capabilities, and created more latitude for the CCP to do as it wished.

according to the UN, the pandemic could force a total of 490 million people into poverty—defined as the loss of access to clean water, adequate food, or shelter—pushing the global poverty rate to around seven percent by 2030, compared with the pre-pandemic target of three percent. 

Contrary to popular belief, some senior Trump administration officials grasped the national security threat posed by the virus faster than their European counterparts did. Top officials in the National Security Council began focusing on the pandemic in early January, just days after news of the outbreak in Wuhan, China, became public.

ven though Pottinger and other NSC officials were wise to the danger, they ultimately failed to persuade Trump to make the necessary preparations to deal with the pandemic when it inevitably reached the United States. 

As the administration began to formulate its response, those who favored a more comprehensive public health approach both at home and abroad were excluded or marginalized at crucial moments. The result was that the Trump administration focused more on holding China responsible for the outbreak and reducing U.S. reliance on Beijing than on the minutiae of global public health policy or the hard work of rallying the world to tackle the pandemic.

the pandemic and China’s response to it helped unify the administration behind a more comprehensive strategy to push back against Beijing. Between March 2020 and the end of the year, the senior official said, the United States put in place more containment measures than it had in the previous three years, including restrictions on Chinese technology firms, sanctions on Chinese officials, looser regulations on diplomatic contacts with Taiwan, and recognition of the repression in Xinjiang as a genocide. In this sense, the pandemic was a pivotal moment in the U.S.-Chinese rivalry. 

Competition between the two countries overwhelmed everything else, including U.S. cooperation with allies on the pandemic, leaving a global leadership vacuum that no one could fill.

The EU tried to step up by increasing funding for the WHO and for COVAX, the global initiative to share vaccines, but it never came close to organizing a global response. China’s assertive foreign policy, and its attempts to use pandemic assistance to advance its interests, aggravated European leaders and convinced them to harden their positions toward China throughout the course of 2020. 

During this period, there was hardly any international cooperation on vaccine development or distribution, no coordination on travel restrictions or the distribution of medical supplies, and limited cooperation on achieving a cessation of hostilities in conflict zones

The economic disruption caused by COVID-19 devastated low-income countries, which received little in the way of international assistance. Especially hard hit were countries, such as Bangladesh, that had made significant development gains in the last two decades and were propelling themselves into the lower tier of middle-income economies.

The United States needs a strategy to address transnational threats under the conditions of great-power competition. It must aim to cooperate with rivals, especially China, to prepare for future pandemics and to tackle climate change

Pandemics are not the only transnational threat that promises to intensify great-power rivalry and diminish the prospects for much-needed cooperation. Climate change could do the same.

Rather than unite the world around a common purpose, climate change is likely to deepen competition between major powers, especially as the transition away from fossil fuels creates economic winners and losers.

Countries that aggressively decarbonize could place sanctions and other trade restrictions on countries that do not, leading to counterresponses and new trade wars.

the impediments to cooperation between Europe and China on climate change “are becoming higher” and warn that “decision-makers must not underestimate the highly competitive aspects of how China is changing its energy production and consumption.” 

The United States and Europe will both compete with China for access to raw materials and in developing the technology needed to make their economies carbon neutral: magnets, batteries, high-performance ceramics, and light-emitting diodes, among other things

even if the U.S. government remains broadly aligned with Europe on climate policy, the Europeans could still become disaffected if Congress blocks meaningful climate action, such as commitments to cut carbon emissions or invest in clean technology. This, in turn, could diminish Europe’s willingness to help uphold the U.S.-led international order.

If, on the one hand, they mean softening U.S. rhetoric without conceding much of substance to China, they would do well to look to Europe, where governments were much more inclined than the Trump administration to cooperate with China, but China did not take them up on the offer.

If, on the other hand, they mean unilaterally making major geopolitical concessions to China—on its territorial acquisitions in the South China Sea, for instance, or the status of Taiwan—the United States would not only pay an extremely high price but also likely embolden Beijing further without actually securing cooperation on pandemics or climate change beyond what Beijing has already offered.

There is no getting around strategic competition with Beijing: it is deeply embedded in the international order, mainly because China seeks to expand its sphere of influence in Asia at the expense of the United States and its allies, which are in turn committed to thwarting Beijing’s plans.

The United States and China are also engaged in what Jake Sullivan, Biden’s national security adviser, recently called “a competition of models.” China is seeking to make the world safe for the CCP and to demonstrate the effectiveness of its system. This entails pushing back against what it sees as pressure from liberal democratic countries that could thwart its objectives. For its part, the United States worries about the negative externalities of Chinese authoritarianism, such as censorship of international criticism of Beijing or the export of its tools of repression to other countries.

The United States also worries about what would happen to the military balance of power if China secured an enduring advantage in key technologies.

Even in diplomacy, friction will be endemic to the U.S.-Chinese relationship and will affect the broader international order for the foreseeable future. Outright confrontation can be avoided—but competition cannot. 

This competition places real limits on cooperation. Take the arena of global public health: many studies on how to improve pandemic preparedness call on world leaders to dramatically strengthen the WHO, including by giving it the same power to enforce international health regulations as the International Atomic Energy Agency enjoys with nuclear nonproliferation rules

The problem is getting every government to agree to a universally applicable mechanism for sanctions or some other enforcement mechanism. China will not agree to any reform that would involve intrusive inspections of its scientific research facilities.

The need for cooperation on transnational threats must change how the United States competes with China—not whether it competes.

U.S. officials should not give up on China entirely; instead, they should make a good-faith effort to work with Beijing, both bilaterally and in multilateral settings. Recognizing that there are strict limits on U.S.-Chinese cooperation is not the same as saying that no cooperation is possible.

the real challenge is determining what to do when cooperation with China and other rivals falls short of what is required. The United States needs a backup plan to tackle shared challenges through coalitions of the willing.

When it comes to pandemic preparedness, this means fully supporting the WHO (including by pressing for needed reforms) but also forging a coalition of like-minded states: a global alliance for pandemic preparedness that would regularly convene at the head-of-state level and work alongside nongovernmental organizations and the private sector.

Crucially, whenever the WHO declared an international public health emergency, alliance members would coordinate on travel and trade restrictions, as well as on public messaging and financial penalties and sanctions. Those penalties and sanctions would be aimed at those states that failed to provide sufficient access to or fully cooperate with the WHO. The alliance would support, not supplant, the WHO.

Sustained, managed competition with China could potentially help the United States build bipartisan support for investments in clean technology that would prevent Beijing from gaining an enduring advantage in this area.

ut the United States and the European Union will also need to build coalitions of the willing to deal with the international security consequences of accelerated climate change, such as extreme weather events that threaten large numbers of people, and to address the foreign policy dimensions of climate action, including managing the risk that a shift away from fossil fuels could destabilize countries and regions that are dependent on oil exports.

Cooperation across this divide should always be the first choice in times of shared crisis, but as the COVID-19 pandemic has demonstrated, the U.S.-led constellation must always have a backup plan. It did not have one in 2020. It needs one for the next crisis

But dwindling supply from European mines and high demand from China have pushed up the price of the black stuff, too.

Rising demand for liquefied natural gas in Asia, as economies there have recovered from the covid-19 slowdown, has driven up prices.

wind turbines, which generate about 10% of Europe’s power, slowed during an unusually still summer.

Disruptions of imports piped from Russia and Norway, which supply nearly half of Europe’s gas, made inventories hard to replenish. The flow from Norway was limited because of work on improving the country’s infrastructure;

So has the rising cost of European carbon permits, which carbon producers must buy to offset their emissions. From around €30 ($35) per tonne at the start of the year, they climbed to a record €63 in early September

Britain, which derives about 40% of its energy from natural gas and 20% from wind turbines

The wholesale price paid by suppliers has spiked 250% this year

The government has ruled out a bail-out for ailing survivors. Heavy industry is already reeling from price increases.

consumers may soon feel the pinch, too. Europeans should hope for a warm and windy winter.

With most speaking on the assumption that their remarks would not become public, U.S. officials acknowledged that their warfighting strategies were fatally flawed and that Washington wasted enormous sums of money trying to remake Afghanistan into a modern nation.

The interviews also highlight the U.S. government’s botched attempts to curtail runaway corruption, build a competent Afghan army and police force, and put a dent in Afghanistan’s thriving opium trade.

Since 2001, the Defense Department, State Department and U.S. Agency for International Development have spent or appropriated between $934 billion and $978 billion

Those figures do not include money spent by other agencies such as the CIA and the Department of Veterans Affairs, which is responsible for medical care for wounded veterans.

Several of those interviewed described explicit and sustained efforts by the U.S. government to deliberately mislead the public. They said it was common at military headquarters in Kabul — and at the White House — to distort statistics to make it appear the United States was winning the war when that was not the case.

SIGAR departed from its usual mission of performing audits and launched a side venture. Titled “Lessons Learned,” the $11 million project was meant to diagnose policy failures in Afghanistan so the United States would not repeat the mistakes the next time it invaded a country or tried to rebuild a shattered one.

the reports, written in dense bureaucratic prose and focused on an alphabet soup of government initiatives, left out the harshest and most frank criticisms from the interviews.

“We found the stabilization strategy and the programs used to achieve it were not properly tailored to the Afghan context, and successes in stabilizing Afghan districts rarely lasted longer than the physical presence of coalition troops and civilians,” read the introduction to one report released in May 2018.

To augment the Lessons Learned interviews, The Post obtained hundreds of pages of previously classified memos about the Afghan war that were dictated by Defense Secretary Donald H. Rumsfeld between 2001 and 2006.

Together, the SIGAR interviews and the Rumsfeld memos pertaining to Afghanistan constitute a secret history of the war and an unsparing appraisal of 18 years of conflict.

With their forthright descriptions of how the United States became stuck in a faraway war, as well as the government's determination to conceal them from the public, the Lessons Learned interviews broadly resemble the Pentagon Papers, the Defense Department's top-secret history of the Vietnam War.

running throughout are torrents of criticism that refute the official narrative of the war, from its earliest days through the start of the Trump administration.

At the outset, for instance, the U.S. invasion of Afghanistan had a clear, stated objective — to retaliate against al-Qaeda and prevent a repeat of the Sept. 11, 2001, attacks.

Yet the interviews show that as the war dragged on, the goals and mission kept changing and a lack of faith in the U.S. strategy took root inside the Pentagon, the White House and the State Department.

Fundamental disagreements went unresolved. Some U.S. officials wanted to use the war to turn Afghanistan into a democracy. Others wanted to transform Afghan culture and elevate women’s rights. Still others wanted to reshape the regional balance of power among Pakistan, India, Iran and Russia.

The Lessons Learned interviews also reveal how U.S. military commanders struggled to articulate who they were fighting, let alone why.

Was al-Qaeda the enemy, or the Taliban? Was Pakistan a friend or an adversary? What about the Islamic State and the bewildering array of foreign jihadists, let alone the warlords on the CIA’s payroll? According to the documents, the U.S. government never settled on an answer.

As a result, in the field, U.S. troops often couldn’t tell friend from foe.

The United States has allocated more than $133 billion to build up Afghanistan — more than it spent, adjusted for inflation, to revive the whole of Western Europe with the Marshall Plan after World War II.

As commanders in chief, Bush, Obama and Trump all promised the public the same thing. They would avoid falling into the trap of "nation-building" in Afghanistan.

U.S. officials tried to create — from scratch — a democratic government in Kabul modeled after their own in Washington. It was a foreign concept to the Afghans, who were accustomed to tribalism, monarchism, communism and Islamic law.

During the peak of the fighting, from 2009 to 2012, U.S. lawmakers and military commanders believed the more they spent on schools, bridges, canals and other civil-works projects, the faster security would improve. Aid workers told government interviewers it was a colossal misjudgment, akin to pumping kerosene on a dying campfire just to keep the flame alive.

One unnamed executive with the U.S. Agency for International Development (USAID) guessed that 90 percent of what they spent was overkill: “We lost objectivity. We were given money, told to spend it and we did, without reason.”Lessons Learned interview | 10/7/2016Tap to view full document

The gusher of aid that Washington spent on Afghanistan also gave rise to historic levels of corruption.

In public, U.S. officials insisted they had no tolerance for graft. But in the Lessons Learned interviews, they admitted the U.S. government looked the other way while Afghan power brokers — allies of Washington — plundered with impunity.

Christopher Kolenda, an Army colonel who deployed to Afghanistan several times and advised three U.S. generals in charge of the war, said that the Afghan government led by President Hamid Karzai had “self-organized into a kleptocracy”Christopher Kolenda | Lessons Learned interview | 4/5/2016Tap to view full document by 2006 — and that U.S. officials failed to recognize the lethal threat it posed to their strategy.

By allowing corruption to fester, U.S. officials told interviewers, they helped destroy the popular legitimacy of the wobbly Afghan government they were fighting to prop up. With judges and police chiefs and bureaucrats extorting bribes, many Afghans soured on democracy and turned to the Taliban to enforce order.

None expressed confidence that the Afghan army and police could ever fend off, much less defeat, the Taliban on their own. More than 60,000 members of Afghan security forces have been killed, a casualty rate that U.S. commanders have called unsustainable.

In the Lessons Learned interviews, however, U.S. military trainers described the Afghan security forces as incompetent, unmotivated and rife with deserters. They also accused Afghan commanders of pocketing salaries — paid by U.S. taxpayers — for tens of thousands of “ghost soldiers.”

an army and national police force that can defend the country without foreign help.

Year after year, U.S. generals have said in public they are making steady progress on the central plank of their strategy: to train a robust Afgh

From the beginning, Washington never really figured out how to incorporate a war on drugs into its war against al-Qaeda. By 2006, U.S. officials feared that narco-traffickers had become stronger than the Afghan government and that money from the drug trade was powering the insurgency

throughout the Afghan war, documents show that U.S. military officials have resorted to an old tactic from Vietnam — manipulating public opinion. In news conferences and other public appearances, those in charge of the war have followed the same talking points for 18 years. No matter how the war is going — and especially when it is going badly — they emphasize how they are making progress.

Two months later, Marin Strmecki, a civilian adviser to Rumsfeld, gave the Pentagon chief a classified, 40-page report loaded with more bad news. It said “enormous popular discontent is building” against the Afghan government because of its corruption and incompetence. It also said that the Taliban was growing stronger, thanks to support from Pakistan, a U.S. ally.

Since then, U.S. generals have almost always preached that the war is progressing well, no matter the reality on the battlefield.

he Lessons Learned interviews contain numerous admissions that the government routinely touted statistics that officials knew were distorted, spurious or downright false

A person identified only as a senior National Security Council official said there was constant pressure from the Obama White House and Pentagon to produce figures to show the troop surge of 2009 to 2011 was working, despite hard evidence to the contrary.

Even when casualty counts and other figures looked bad, the senior NSC official said, the White House and Pentagon would spin them to the point of absurdity. Suicide bombings in Kabul were portrayed as a sign of the Taliban’s desperation, that the insurgents were too weak to engage in direct combat. Meanwhile, a rise in U.S. troop deaths was cited as proof that American forces were taking the fight to the enemy.

“And this went on and on for two reasons,” the senior NSC official said, “to make everyone involved look good, and to make it look like the troops and resources were having the kind of effect where removing them would cause the country to deteriorate.”