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"The removal of Timnit has had a demoralizing effect on the whole of our team."

Since Gebru's termination earlier this month, more than 2,600 Googlers have signed an open letter expressing dismay over the way Gebru exited the company and asking executives for a full explanation of what prompted her dismissal.

Gebru's firing happened "without warning rather than engaging in dialogue."

Google has maintained that Gebru resigned, though Gebru herself says she never voluntary agreed to leave the company.

They say Jeff Dean, senior vice president of Google Research, and other executives involved in Gebru's firing need to be held accountable.

Gebru helped establish Black in AI, a group that supports Black researchers in the field of artificial intelligence.

At Google, Gebru's former team wrote in the Wednesday letter that studying ways to reduce the harm of AI on marginalized groups is key to their mission.

Last month, Google abruptly asked Gebru to retract a research paper focused on the potential biases baked into an AI system that attempts to mimic human speech. The technology helps power Google's search engine. Google claims that the paper did not meet its bar for publication and that Gebru did not follow the company's internal review protocol.

However, Gebru and her supporters counter that she was being targeted because of how outspoken she was about diversity issues, a theme that was underscored in the letter.

The letter says Google's top brass have committed to advancing diversity, equity and inclusion among its research units, but unless more concrete and immediate action is taken, those promises are "virtue signaling; they are damaging, evasive, defensive and demonstrate leadership's inability to understand how our organization is part of the problem," according to the letter.

She also was the co-author of pioneering research into facial recognition technology that demonstrated how people of color and women are misidentified far more often than white faces. The study helped persuade IBM, Amazon and Microsoft to stop selling the technology to law enforcement.

saying such "gaslighting" has caused harm to Gebru and the Black community at Google.

Google has a history of striking back against employees who agitate internally for change. Organizers of the worldwide walkouts at Google in 2018 over sexual harassment and other issues were fired by the company. And more recently, the National Labor Relation Board accused Google of illegally firing workers who were involved in union organizing.

that’s what I felt back in those days,” he said, “that everything was for sale — it was all about distraction, it didn’t seem serious. It all felt foolish and headed for a crash.”

Younger viewers do not have to fear Chase’s wrath, because they are not so obviously its object. They are also able to watch the show for hours on end, which makes the subtext and themes more apparent. Perhaps all of this has offered clarity that was not possible when the show aired. Perhaps it is easier now to see exactly who — or what — Chase was angry at.

it is easily one of the most written-about TV shows in the medium’s short history. But more than the shows that have emerged in its wake, which are subjected to close readings and recaps in nearly every major publication, “The Sopranos” has a novelistic quality that actually withstands this level of scrutiny. It’s not uncommon to hear from people who have watched the series several times, or who do so on a routine basis — people who say it reveals new charms at different points in life

Perhaps the greatest mystery of all, looking back on “The Sopranos” all these years later, is this: What was Chase seeing in the mid-’90s — a period when the United States’ chief geopolitical foe was Serbia, when the line-item veto and school uniforms were front-page news, when “Macarena” topped the charts — that compelled him to make a show that was so thoroughly pessimistic about this country?

“I don’t think I felt like it was a good time,” he told me. He is 76 now, and speaks deliberately and thoughtfully. “I felt that things were going downhill.” He’d become convinced America was, as Neil Postman’s 1985 polemic put it, “Amusing Ourselves to Death,” not an easy thing for a journeyman TV writer to accept.

“There was nothing but crap out there. Crap in every sense. I was beginning to feel that people’s predictions about the dumbing-down of society had happened and were happening, and I started to see everything getting tawdry and cheap.”

Expanded access to credit had cut into what mobsters call the shylock business; there’s no need to go to a loan shark when the payday lender will offer you similarly competitive rates. Gambling was legalized in many states and flourishes on many reservations; nearly every state in the Union has a lottery, which decimated the numbers racket. Italian American neighborhoods have emptied out — as Jacobs writes, “radically diminishing the pool of tough teenagers with Cosa Nostra potential”; this is dramatized brilliantly in the final episode of the series, when a mobster from a New York family hurries through Little Italy on an important phone call and, when the call ends, looks around to see he’s wandered into an encroaching and vibrant Chinatown. And, Jacobs notes, union membership has been decimated. “In the mid-1950s, about 35 percent of U.S. workers belonged to a union,” he writes. “In recent years, only 6.5 percent of private-sector workers have been union members.”

I was about to change the subject when he hit on something. “Have you noticed — or maybe you haven’t noticed — how nobody does what they say they’re going to do?” he said, suddenly animated. “If your sink gets jammed up, and a guy says he’s going to be out there at 5:30 — no. Very few people do what they say they’re going to do. There is a decline in goods and services that is enormous.”

Chase told me the real joke of the show was not “What if a mobster went to therapy?” The comedic engine, for him, was this: What if things had become so selfish and narcissistic in America that even the mob couldn’t take it? “That was the whole thing,” he said. “America was so off the rails that everything that the Mafia had done was nothing compared to what was going on around them.”

In “The Mafia: A Cultural History,” Roberto M. Dainotto, a professor of literature at Duke, writes that one thing our cinematic Mafiosi have that we admire, against our better judgment, is access to structures of meaning outside of market forces: the church, family, honor. The Mafia movie often pits these traditional values against the corrosive and homogenizing effects of American life.

What “The Sopranos” shows us, Dainotto argues, is what happens when all that ballast is gone, and the Mafia is revealed to be as ignoble as anything else. “Life is what it is,” he writes, “and repeats as such.”

The show puts all this American social and cultural rot in front of characters wholly incapable of articulating it, if they even notice it.

What is, for me, one of the show’s most memorable scenes has no dialogue at all. Tony and his crew have just returned from a business trip to Italy, during which they were delighted with the Old Country but also confronted with the degree of their alienation from their own heritage. They’re off the plane, and in a car traveling through Essex County. As the camera pans by the detritus of their disenchanted world — overpasses, warehouses — Tony, Paulie and Christopher are seeing their home with fresh eyes, and maybe wondering if their ancestors made a bad trade or if, somewhere along the line, something has gone horribly wrong. But we don’t know: For once, these arrogant, stupid and loquacious men are completely silent.

Around the time “The Sopranos” premiered, the N.Y.U. Law professor James B. Jacobs wrote a paper, along with a student, arguing that the Mafia, though weakened by decades of prosecutions, could come roaring back. By 2019, though, he had published a new paper called “The Rise and Fall of Organized Crime in the United States,” declaring the Mafia all but finished. “The world in which the Cosa Nostra became powerful is largely gone,” he wrote. And he cites a litany of factors that aided its collapse, a mix of technological advances, deregulation and financialization — many of the same forces that have created the stratified economy of today.

In his first therapy session with Dr. Melfi, Tony tries to explain why he thinks he has panic attacks, why he suffers from stress. “The morning of the day I got sick, I’d been thinking: It’s good to be in something from the ground floor,” he says. “I came too late for that, I know. But lately, I’m getting the feeling that I came in at the end. The best is over.” Melfi tells him that many Americans feel that way. Tony presses on: “I think about my father: He never reached the heights like me, but in a lot of ways he had it better. He had his people, they had their standards, they had their pride. Today, what do we got?”

You can see this world — one in which no one can be squeezed because everyone is being squeezed — starting to take shape from the very beginning of the show. In the pilot, Tony is fending off competition from a new waste-hauling business undercutting his company’s extortionate fees, and trying to figure out how he can get a piece of the similarly extortionate costs his health insurer paid for his M.R.I. — a procedure he had because the stress in his life had given him a panic attack.

The bien-pensant line on Tony remains that he’s a sociopath, and only used therapy to become a better criminal. This is an idea spoon-fed to the viewer in the final episodes by a contrite Dr. Melfi, in a show that spoon-feeds almost nothing to the viewer. Melfi herself might call this a coping mechanism to avoid the messier reality, which is that Tony lives in an immoral world nestled within another immoral world, both of which have only grown more chaotic because of forces outside his control.

Because of this, you can see how he reasons himself into more and more heinous crimes, justifying each and every one of them to himself. Perhaps to you too — at least, up to a point. That sympathy for Tony led contemporaneous critics to ask if people were watching the show in the wrong way, or if our enjoyment pointed to a deficiency of the heart.

t is this quality of Tony’s — this combination of privilege and self-loathing — that I suspect resonates with a younger generation, whether we want to admit it or not. He’s not so different from us, after all. He has an anxiety disorder. He goes to therapy and takes S.S.R.I.s, but never really improves — not for long, anyway. He has a mild case of impostor syndrome, having skipped some key steps to becoming boss, and he knows that people who hold it against him are sort of right. He’s still proud of his accomplishments in high school. He does psychedelics in the desert, and they change his perspective on things. He often repeats stuff he half-remembers someone smarter than him saying. He’s arguably in an open marriage with Carmela, if a rather lopsided one. He liked listening to “Don’t Stop Believin’” in 2007. He’s impulsive and selfish and does not go to church, though he does seem open to vaguer notions of spirituality. He wishes his career provided him with meaning, but once he had the career, he discovered that someone had pulled the rug out at some point, and an institution that had been a lodestar to him for his whole life was revealed to be a means of making money and nothing more. Does this sound at all familiar to you?

Like many young people, Tony is a world-historically spoiled man who is nevertheless cursed, thanks to timing, to live out the end of an enterprise he knows on some level to be immoral.

It gives him panic attacks, but he’s powerless to find a way out. Thus trapped — and depressed — it’s not so hard for him to allow himself a few passes, to refuse to become better because the world is so rotten anyway.

Tony’s predicament was once his to suffer alone, but history has unfolded in such a way as to render his condition nearly universal.

That the people in power truly had insulated themselves in a fantasy environment — not just in the realm of foreign policy, but also, more concretely, in the endless faux-bucolic subdivisions that would crater the economy. We were living in a sort of irreality, one whose totality would humiliate and delegitimize nearly every important institution in American life when it ended, leaving — of all people — the Meadows and A.J.s of the world to make sense of things.

if people still see a monster in Tony, then the monster is themselves: a twisted reflection of a generation whose awakening to the structures that control them came in tandem with a growing aversion to personal accountability in the face of these systems.

Whether that’s true or not, it offers us all permission to become little Tonys, lamenting the sad state of affairs while doing almost exactly nothing to improve ourselves, or anything at all.

This tendency is perhaps most pronounced online, where we are all in therapy all day, and where you can find median generational opinions perfectly priced by the marketplace of ideas — where we bemoan the wrongs of the world and tell ourselves that we can continue being who we are, and enjoy the comforts we’ve grown accustomed to.

In the show’s finale, as the extended Soprano family gathers to mourn the death of Bobby Baccalieri, we find Paulie Walnuts stuck at the kids’ table, where A.J., newly politically awakened, charges into a rant. You people are screwed, he says. “You’re living in a dream.” Bush let Al Qaeda escape, he tells them, and then made us invade some other country? Someone at the table tells him that if he really cares, he should join up. A.J. responds: “It’s more noble than watching these jackoff fantasies on TV of how we’re kicking their ass. It’s like: America.” Again, he’s interrupted: What in the world does he mean? He explains: “This is still where people come to make it. It’s a beautiful idea. And then what do they get? Bling? And come-ons for [expletive] they don’t need and can’t afford?”

However inartfully, A.J. was gesturing at something that would have been hard for someone his age to see at the time, which is that the ’00s were a sort of fever dream, a tragic farce built on cheap money and propaganda.

The notion that individual action might help us avoid any coming or ongoing crises is now seen as hopelessly naïve, the stuff of Obama-era liberalism.

. The “leftist ‘Sopranos’ fan” is now such a well-known type that it is rounding the corner to being an object of scorn and mockery online.

One oddity that can’t be ignored in this “Sopranos” resurgence is that, somewhat atypically for a TV fandom, there is an openly left-wing subcurrent within it

But all of this, Graeber and Wengrow argue, is wrong. Recent archaeological discoveries, they write, show that early humans, far from being automatons blindly moving in evolutionary lock step in response to material pressures, self-consciously experimented with “a carnival parade of political forms.”

It’s a more accurate story, they argue, but also “a more hopeful and more interesting” one

Reviewing the book in The Nation, the historian Daniel Immerwahr called Graeber “a wildly creative thinker” who was “better known for being interesting than right” and asked if the book’s confident leaps and hypotheses “can be trusted.”

At first, they thought it might be a short book on the origins of social inequality.

“The more we thought, we wondered why should you frame human history in terms of that question?” Wengrow said. “It presupposes that once upon a time, there was something else.”

Graeber and Wengrow, by contrast, write in the grand tradition of social theory descended from Weber, Durkheim and Levi-Strauss.

“We are all projects of collective self-creation,” they write. “What if, instead of telling the story about how our society fell from some idyllic state of equality, we ask how we came to be trapped in such tight conceptual shackles that we can no longer even imagine the possibility of reinventing ourselves?”

And Immerwahr deemed at least one claim — that colonial American settlers captured by Indigenous people “almost invariably” chose to stay with them — “ballistically false,” claiming that the authors’ single cited source (a 1977 dissertation) “actually argues the opposite.”

Wengrow countered that it was Immerwahr who was reading the source wrong. And he noted that he and Graeber had taken care to publish the book’s core arguments in leading peer-reviewed scholarly journals or deliver them as some of the most prestigious invited lectures in the field.

he said the two men had delivered a “fatal blow” to the already-weakened idea that settling down in agricultural states was what humans “had been waiting to do all along.”

But the most striking part of “The Dawn of Everything,” Scott said, is an early chapter on what the authors call the “Indigenous critique.” The European Enlightenment, they argue, rather than being a gift of wisdom bestowed on the rest of the world, grew out of a dialogue with Indigenous people of the New World, whose trenchant assessments of the shortcomings of European society influenced emerging ideas of freedom.

“The Dawn of Everything” sees pervasive evidence for large complex societies that thrived without the existence of the state, and defines freedom chiefly as “freedom to disobey.”

“We’ve reached the stage of history where we have scientists and activists agreeing our prevailing system is putting us and our planet on a course of real catastrophe,”

“To find yourself paralyzed, with your horizons closed off by false perspectives on human possibilities, based on a mythological conception of history, is not a great place to be.”

The experience of nearly 250 years is that the first type of movement generally succeeds: emancipation, suffrage, civil rights, marriage equality. They have aimed to build the country up, and bring Americans more closely together, on foundations already in place.

The second type — from the Confederacy to the white supremacy of the Jim Crow era to militant Black nationalism in the 1960s — always fails. These movements want to tear things down, divide Americans, reject and replace our national foundations.

What’s wrong with a movement that, on its narrowest terms, aims to make Americans more aware of racial injustices, past and present? Nothing. In cases like those of Eric Garner, George Floyd and Ahmaud Arbery, non-Black America has had a long-overdue education about the fact that Black lives can still be subject to the same casual cruelties of a century ago.

like many movements that overspill their initial causes of action, Wokeness now connotes much more than an effort to reform the police or denounce racial injustice when it occurs. It is, instead, an allegation that racism is a defining feature, not a flaw, of nearly every aspect of American life, from its inception to its present, in the books we read, the language we speak, the heroes we venerate, the roads we drive, the way we do business, the way we select for merit and so on.

The insult turns to injury when it comes to the solutions Wokeness prescribes, and in the way that it prescribes them.

The problem with the allegation isn’t that it’s flatly wrong: America’s past is shot through with racism and, as Faulkner put it, “The past is never dead. It’s not even past.” But the allegation is also incomplete, distorted, ungenerous to former generations that advanced America’s promise, and untrue to the country most Americans know today.

it is a prescription, not for genuine dialogue and reform, but for indoctrination and extirpation, based on a relentless form of race consciousness

It operates as if, in city after city, American police forces aren’t led by Black police chiefs and staffed by officers of diverse backgrounds. It operates as if white supremacy is still being systemically enforced, while ignoring the fact that a previously marginalized ethnic minority, namely Asian Americans, enjoys higher income levels than white Americans.

Above all, Wokeness pretends that incidents such as George Floyd’s murder, which are national scandals, are actually national norms

Most Americans, I suspect, not only sense the falseness of the allegation. They are, increasingly, insulted by it.

Wokeness operates as if there had been no civil rights movement, and that white Americans hadn’t been an integral part of it. It operates as if 60 years of affirmative action never happened, and that an ever-growing percentage of Black Americans don’t belong to the middle and upper class (and that they are, incidentally, concentrated in the American South). It operates as if we didn’t twice elect a Black president and recently bury a Black general as an American icon.

A typical example: The American Medical Association recently published its “Guide to Language, Narrative and Concepts,” which includes such recommendations as replacing the term “disadvantaged” with “historically and intentionally excluded,” “social problem” with “social injustice,” “vulnerable” with “oppressed,” and “blacklist” and “blackmail” with words that don’t suggest an association between the word “black” and “suspicion or disapproval.”

This isn’t silly. It’s Orwellian. It’s a blunt attempt to turn everyday speech into a perpetual, politicized and nearly unconscious indictment of “the system.” Anyone who has spent time analyzing how the totalitarian regimes of the 20th century operated will note the similarities.

Ultimately, though, Americans are still free to reject the Woke ethos, even if they sometimes have to leave their institutions as a result.

This is why Wokeness will fail. For every attempt to cancel certain writers, others will publish them. For every diktat to fix language by replacing some words with others, people will merely find more subversive ways to say the same thing.

In the long run, Americans have always gotten behind protest movements that make the country more open, more decent, less divided. What today is called Woke does none of those things. It has no future in the home of the free.

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

although North Korea “could not take part in the Olympics due to the hostile forces’ moves and the worldwide pandemic,” it “would fully support the Chinese comrades in all their work to hold a splendid and wonderful Olympic festival.”

The North is one of China’s closest allies. It depends on China for most of its external trade while struggling under heavy sanctions imposed by the United Nations for its nuclear weapons development

It has rejected outside aid and shut its borders, reportedly placing its guards there under “shoot to kill” orders. The country has claimed no Covid-19 cases, and it has rejected offers of millions of vaccine doses, leaving its population vulnerable to explosive outbreaks should its borders reopen.

Officials in South Korea had hoped the Beijing Olympics could provide a venue where officials from the United States, China and the two Koreas could meet.

Mr. Kim used the North’s participation in Pyeongchang ​as ​​a signal to start diplomacy after a series of nuclear and long-range missile tests. Soon, inter-Korean dialogue followed, leading to three summit meetings between Mr. Kim and Mr. Moon. Mr. Kim also met with President Donald J. Trump three times.

But since the collapse of Mr. Kim’s diplomacy with Mr. Trump in 2019, North Korea has shunned official contacts with South Korea or the United States. The pandemic has deepened its diplomatic isolation and economic difficulties. ​On Wednesday, it launched what it called a hypersonic missile.

The United States, meanwhile, warned again that there would be "serious consequences" if Russia engages to "pursue confrontation" with Ukraine.

Despite the accusations the two officials recognized the importance of dialogue

calling on Russia to abide by the Minsk peace agreements hammered out in 2015 between Russia, Ukraine, France and Germany.

Blinken criticized Russia's adherence to the Helsinki Final Act, a multilateral agreement dating back to 1975, saying that the country "continues to violate the Helsinki principles and repeatedly obstructs the work of this organization."

Blinken told summit attendees that the US holds "deep concerns about Russia's plans for renewed aggression against Ukraine."

Blinken also held a bilateral meeting Thursday with the Ukrainian Foreign Minister Dymtro Kuleba, at which the top US diplomat reiterated Washington's "unwavering commitment to Ukraine's territorial integrity, sovereignty and its independence."

The OSCE summit comes on the heels of a meeting of NATO foreign ministers in Latvia that was dominated by concerns over recent events in Belarus and Russia's intentions in Ukraine.

The US and NATO say Russia is increasing the number of combat troops near its border with Ukraine.

The Kremlin has repeatedly denied that Russia plans to invade Ukraine

sees NATO support for the country as a threat on Russia's western border.

Putin said NATO military expansion close to Russian borders and deploying missile systems in Ukraine would be crossing a "red line" for Russia.

Liberals aren’t watching “Yellowstone” for cultural reasons, and conservatives love it for ideological ones, he said.

I watched all four seasons of “Yellowstone” through the lens of these asymmetries. The show is compelling but not groundbreaking. It is too easy to call it a conservative show. Like its audience counterpart, “Yellowstone” thinks it is at war with progress when it is really at war with itself.

when it comes to identity and tastes, Childress said it is a “mark of social status for liberals to be culturally omnivorous.”

In contrast, conservative audiences do not consider reading, watching or listening around a mark of status or identity. And they are more likely to dislike what liberals like than liberals are to dislike what conservatives like.

“People on the left like more pop culture than people on the right,’’ Childress said. “And people on the left don’t dislike what people on the right dislike.

The rejection of cosmopolitanism as a desirable attribute is more subtle, but present

The West of “Yellowstone” is multiethnic, multiracial and multi-class. There are Black cowboys and complex Native American characters. A pair of lesbians even makes an appearance in Season 2 (although there are no gay cowboys,

Regardless of whether you agree with the classification, you have an idea of what other people mean by “elite”: urban, sophisticated and educated. In short, the things that “Yellowstone” skewers at every opportunity. The characters despise California and San Francisco in particular

It accommodates feminism by making women the most vicious capitalist actors.

The slow dialogue of “Yellowstone” also rejects sophistication. The narrative plods even as the show’s many horses run. And the mood is dour; there aren’t many jokes

Those aesthetic choices implicitly argue for simplicity as a moral virtue, something John Dutton telegraphs when he tells a field hand that sometimes the world really is simple.

“Yellowstone” sidesteps Westerns’ romanticization of the white imaginary. At dinner last week with my family, my 30-something Black lesbian cousins gushed about the show, although they prefer its Native American characters to the Duttons.

There are few strivers in the world of “Yellowstone.” The show’s royalty grudgingly accept higher education as a strategic tool to beat the liberal do-gooders. The poor and disenfranchised don’t dream of going to college at all.

the show’s revenge is how well it exposes the material conditions of elitism. Its worldview resembles fantasy but it is brutally realistic about how power operates.

Whatever brings its audience to the show, once they arrive, they are playacting within the vision of America that “Yellowstone” holds. The show suggests that elitism and power can be reconciled with our need to be both moral and self-interested. It is a seductive fantasy because it does not ask the audience to give up anything.

The nominal diversity of the show’s cast implies that conservatives don’t hate anyone, as long as everyone is willing to conform to their way of life

It acknowledges white land theft and Native American grievance, but it does not make a case for reparations.

It accepts that Christopher Columbus was a colonizer but implies that the Duttons’ good-enough ends justify the means.

If the show rejects sophistication, it takes a hammer to education

And it depicts the police as feckless, but it does not want to abolish cops. It wants to choose the cops. That means a lot of guns.

“Yellowstone” does not just have gunfights. It has all-out wars. There are military-grade weapons, aerial assaults, night-vision goggles and automatic rifles. When John Dutton cannot win, he starts shooting.

“Yellowstone” isn’t ideologically driven, even if ideology is what makes it so comforting for conservative audiences.

in the end, the show shares a problem with Republican Party electoral politics: Neither offers a compelling vision of the future.

Republicans don’t solve problems like climate change or economic inequality or water rights or housing costs or stagnant wages. With Donald Trump and Mitch McConnell’s leadership, the G.O.P. does not even bother to sell a conservative story for America. Audiences looking for that vision in “Yellowstone” might find that cosmetic diversity needn’t be scary, but they won’t find much else.

Like Republicans, the Dutton dynasty has one defense against demography and time: Buy guns and hoard stolen power.

In the Netherlands, the PVV surged to become the largest party among 18- to 34-year-olds, winning 17% of their vote against 7% previously. In Sweden’s 2022 ballot, 22% of the 18-21 cohort voted for the far-right Sweden Democrats, against 12% in 2018.

“I am not a racist because I voted for Wilders. It frustrates me that migrants receive more help from the government than Dutch people – but I’m not against Islam; I don’t want mosques closed. I just think we need to control immigration better.”

Koen, 19, a student in Amsterdam, echoed that view. “I still live with my parents – I can’t afford a room in Amsterdam,” he said. “I have to commute every day. Wilders wants to give housing to people who are from here – I don’t think that’s strange.”

Far-right parties are not the preferred option – or even second choice – for younger voters everywhere in Europe, analysts caution. The trend appears strongest in countries such as Austria, Germany, the Netherlands, Sweden and Denmark

In Spain, the ultra-conservative Vox party’s share of the under-35 vote soared from 22% in April 2019 to a record 34% that November, echoing its rollercoaster performance with the electorate as a whole. It fell back in July this year but still stands at 27%.

Issues such as housing, overcrowded classes and struggling hospitals were key to the youth vote, De Vries said. “Wilders may want ‘Dutch people first’ but he promises to fix these things,” she said. “The government parties imposed austerity.”

Zerka also identified economic insecurity as the most significant factor. “Young voters haven’t moved rightwards on migration, abortion, minority rights,” he said. “Far-right parties have convinced them that they offer a credible economic alternative.”

Other factors include some far-right parties “managing to position themselves as a ‘cool’ electoral option”, Zerka said. “They are increasingly offering younger voters equally young, often charismatic politicians – people who speak their language.”

Zerka also cites far-right parties’ social media skills: Spain’s Vox has a particularly slick operation, and Sławomir Mentzen, the 37-year-old leader of Poland’s ultra-liberal far-right Konfederacja (Confederation) party, has 800,000 followers on TikTok.

Jacob Davey, the head of policy and research at the Institute for Strategic Dialogue thinktank, identified the influence of a far- and ultra-right youth counterculture, typified by the far-right pan-European Generation Identity group, as an additional factor.

Even if “economic grievances, insecurities around housing, jobs, futures” may account for much of the youth vote, he said, “we’re seeing the growth to fruition of a concerted far- and extreme-right effort to reach and radicalise young people”.

finally, said De Vries, there was “simply, normalisation. For many of these young voters, far-right parties have been part of the political landscape their whole lives. They’ve grown up with them. There’s not the stigmatisation there once was.”

“My mother’s a nurse, and healthcare is not coping. Wilders campaigned on investing in healthcare and old people’s homes. When it comes to migration, people from a war country deserve a better life here but it shouldn’t be at the expense of Dutch people.”

Google’s generative-AI-powered search is the true nightmare for publishers. Across the media world, Google generates nearly 40% of publishers’ traffic, accounting for the largest share of their “referrals,” according to a Wall Street Journal analysis of data from measurement firm SimilarWeb. 

“AI and large language models have the potential to destroy journalism and media brands as we know them,” said Mathias Döpfner, chairman and CEO of Axel Springer,

His company, one of Europe’s largest publishers and the owner of U.S. publications Politico and Business Insider, this week announced a deal to license its content to generative-AI specialist OpenAI.

publishers have seen enough to estimate that they will lose between 20% and 40% of their Google-generated traffic if anything resembling recent iterations rolls out widely. Google has said it is giving priority to sending traffic to publishers.

The rise of AI is the latest and most anxiety-inducing chapter in the long, uneasy marriage between Google and publishers, which have been bound to each other through a basic transaction: Google helps publishers be found by readers, and publishers give Google information—millions of pages of web content—to make its search engine useful.

Already, publishers are reeling from a major decline in traffic sourced from social-media sites, as both Meta and X, the former Twitter, have pulled away from distributing news.

, Google’s AI search was trained, in part, on their content and other material from across the web—without payment. 

Google’s view is that anything available on the open internet is fair game for training AI models. The company cites a legal doctrine that allows portions of a copyrighted work to be used without permission for cases such as criticism, news reporting or research.

The changes risk damaging website owners that produce the written material vital to both Google’s search engine and its powerful AI models.

“If Google kills too many publishers, it can’t build the LLM,”

Barry Diller, chairman of IAC and Expedia, said all major AI companies, including Google and rivals like OpenAI, have promised that they would continue to send traffic to publishers’ sites. “How they do it, they’ve been very clear to us and others, they don’t really know,” he said.

All of this has led Google and publishers to carry out an increasingly complex dialogue. In some meetings, Google is pitching the potential benefits of the other AI tools it is building, including one that would help with the writing and publishing of news articles

At the same time, publishers are seeking reassurances from Google that it will protect their businesses from an AI-powered search tool that will likely shrink their traffic, and they are making clear they expect to be paid for content used in AI training.

“Any attempts to estimate the traffic impact of our SGE experiment are entirely speculative at this stage as we continue to rapidly evolve the user experience and design, including how links are displayed, and we closely monitor internal data from our tests,” Reid said.

Many of IAC’s properties, like Brides, Investopedia and the Spruce, get more than 80% of their traffic from Google

Google began rolling out the AI search tool in May by letting users opt into testing. Using a chat interface that can understand longer queries in natural language, it aims to deliver what it calls “snapshots”—or summaries—of the answer, instead of the more link-heavy responses it has traditionally served up in search results. 

Google at first didn’t include links within the responses, instead placing them in boxes to the right of the passage. It later added in-line links following feedback from early users. Some more recent versions require users to click a button to expand the summary before getting links. Google doesn’t describe the links as source material but rather as corroboration of its summaries.

During Chinese President Xi Jinping’s recent visit to San Francisco, the Google AI search bot responded to the question “What did President Xi say?” with two quotes from his opening remarks. Users had to click on a little red arrow to expand the response and see a link to the CNBC story that the remarks were taken from. The CNBC story also sat over on the far right-hand side of the screen in an image box.

The same query in Google’s regular search engine turned up a different quote from Xi’s remarks, but a link to the NBC News article it came from was beneath the paragraph, atop a long list of news stories from other sources like CNN and PBS.

Google’s Reid said AI is the future of search and expects its new tool to result in more queries.

“The number of information needs in the world is not a fixed number,” she said. “It actually grows as information becomes more accessible, becomes easier, becomes more powerful in understanding it.”

Testing has suggested that AI isn’t the right tool for answering every query, she said.

Many publishers are opting to insert code in their websites to block AI tools from “crawling” them for content. But blocking Google is thorny, because publishers must allow their sites to be crawled in order to be indexed by its search engine—and therefore visible to users searching for their content.To some in the publishing world there was an implicit threat in Google’s policy: Let us train on your content or you’ll be hard to find on the internet.

“Pocock rejected the idea that politics or philosophy addressed the same problems over time — what justice meant for Aristotle did not mean the same for Hobbes or for Rousseau,”

“So explaining what political ideas meant in theory and in practice became the historian’s task.”

The Cambridge School attracted devotees across the world in departments of politics, history, philosophy, literature and language — scholars who were admonished to set aside any modern-day assumptions and prejudices they might hold when delving into the past.

“Readers, Christian or non-believing, who may find themselves involved in analyses of thought they consider obsolete or false, are asked to remember that they are studying the history of a time when such thinking was offered and read seriously,” he wrote.

Professor Pocock’s first book, “The Ancient Constitution and the Feudal Law,” made clear that he would not be a conventional historian. The book asked how people in the 17th century viewed their past, and he wasn’t satisfied with drawing on the go-to philosopher of the period, John Locke. As Colin Kidd wrote in The London Review of Books in 2008, the book “drove a bypass around Locke” and “concentrated instead on a set of debates among such obscure antiquaries as William Petyt, James Tyrrell, William Atwood and Robert Brady.”

“The Machiavellian Moment” cemented Professor Pocock’s reputation among historians, and it continued to grow from there. The first volume of “Barbarism and Religion” came out in 1999, when Professor Pocock was in his mid-70s. Volume 6 appeared in 2015. He also edited or co-edited “The Political Works of James Harrington” (1977), “Edmund Burke: Reflections on the Revolution in France” (1987) and “The Varieties of British Political Thought, 1500-1800” (1993), among other books.

“Pocock’s central contention,” the Oxford historian Keith Thomas wrote in The New York Review of Books in 1986, “is that a work of political thought can only be understood if the reader is aware of the contemporary linguistic constraints to which its author was subject, for these constraints prescribed both his subject matter and the way in which that subject matter was conceptualized.”

its application to the history of political ideas forms a great contrast to the assumptions of the 1950s, when it was widely thought that the close reading of a text by an analytic philosopher was sufficient to establish its meaning, even though the philosopher was quite innocent of any knowledge of the period in which the text was written or of the linguistic traditions within which its author operated.”

“Historians need to understand that the history of discourse is not a simple linear sequence in which new patterns overcome and replace the old,” he wrote in 1988 in a preface to a reissue of “Politics, Language and Time,” a 1971 essay collection, “but a complex dialogue in which these patterns persist in transforming one another.”

Taiwan has long pushed for deeper trade ties with the United States. In 2020, it eased restrictions on imports of U.S. beef and pork in an effort to entice the United States into formal negotiations. The next year, the United States and Taiwan resumed some trade talks despite Beijing’s opposition.

Given Taiwan’s contested status, the two sides will also meet unofficially and under the auspices of the American Institute in Taiwan, which is the de facto U.S. embassy in Taipei, and the Taipei Economic and Cultural Representative Office, which represents Taiwan in the United States in the absence of diplomatic recognition.

In a debate about the Russia-NATO standoff carried by my local German radio station, the dominant view was that de-escalation and diplomacy are what’s needed, with one listener commenting, “I am against weapons in general,” and another warning that nobody should talk about war since, “If you talk about something, it becomes possible.”

After the end of the Cold War, Germany spent decades insulated from the harsh world of power politics; most Germans believed that countries were converging toward a system that marginalized military power and favored economic power and legal proceedings. Now that great power competition and military conflicts are back, Germany does not know what to do.

Many decision-makers and voters in Germany remain deeply committed to the hope that all conflicts can be solved through dialogue under international law and international organizations such as the United Nations — as if all conflict resulted from misunderstandings instead of competing interests.

In a 2020 poll, only 24 percent of Germans said they considered that under some circumstances war could sometimes be necessary to achieve justice, while over 51 percent said war is never necessary.

Nonetheless, an increasing number of Germans are beginning to argue that one might also draw a different lesson from history — such as that it is not a good idea to try to appease aggressors.

“The entire world is suffering from this conflict, but we in Africa are already facing the collateral damages,” said Ousmane Sène

The Kremlin said in a statement that the two leaders would discuss “the expansion of political dialogue and economic and humanitarian cooperation with the countries of the continent.”

More than 14 million people are on the brink of starvation in the Horn of Africa, according to relief groups, and nearly 40 million people are at imminent risk of famine in West Africa this year, according to the World Food Program, a United Nations agency.

For months, African leaders also shunned President Volodymyr Zelensky of Ukraine, who asked at least twice to address the African Union. Mr. Sall said Thursday that Mr. Zelensky could soon address the organization in a videoconference, although no date has been announced.

In West Africa, one of the most visible effects of the war so far has been on bread prices that were already on the rise. In Burkina Faso, bakers went on strike last month after the government shuttered bakeries that had raised the price of a baguette. In the Ivory Coast, bakers have decreased the size of the baguette in the face of soaring wheat costs.

first, what this is not.

It is not an argument against protest

I am not writing this thinking of right-wing America as my audience.

This is not merely a complaint.

Our current conversations waste massive amounts of energy in missing the futility of “dialogue” with them. Of a hundred fundamentalist Christians, how many do you suppose could be convinced via argument to become atheists? There is no reason that the number of people who can be talked out of the Third Wave Antiracism religion is any higher.

our concern must be how to continue with genuine progress in spite of this ideology. How do we work around it?

My interest is not “How do we get through to these people?” We cannot, at least not enough of them to matte