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Reading or rereading a collection of such books today is like watching an old movie that feels more anguishing and frustrating than you remember. The anguish comes from knowing how the tale will unfold; the frustration from realizing that this was hardly the only possible outcome.

This conclusion is laid bare in the sprawling literature to emerge from 9/11 over the past two decades

Whatever individual stories the 9/11 books tell, too many describe the repudiation of U.S. values, not by extremist outsiders but by our own hand.

In these works, indifference to the growing terrorist threat gives way to bloodlust and vengeance after the attacks. Official dissembling justifies wars, then prolongs them. In the name of counterterrorism, security is politicized, savagery legalized and patriotism weaponized.

that state of exception became our new American exceptionalism.

The latest works on the legacy of 9/11 show how war-on-terror tactics were turned on religious groups, immigrants and protesters in the United States. The war on terror came home, and it walked in like it owned the place.

It happened fast. By 2004, when the 9/11 Commission urged America to “engage the struggle of ideas,” it was already too late; the Justice Department’s initial torture memos were already signed, the Abu Ghraib images had already eviscerated U.S. claims to moral authority.

“It is for now far easier for a researcher to explain how and why September 11 happened than it is to explain the aftermath,” Steve Coll writes in “Ghost Wars,” his 2004 account of the CIA’s pre-9/11 involvement in Afghanistan. Throughout that aftermath, Washington fantasized about remaking the world in its image, only to reveal an ugly image of itself to the world.

“We anticipate a black future for America,” bin Laden told ABC News more than three years before the 9/11 attacks. “Instead of remaining United States, it shall end up separated states and shall have to carry the bodies of its sons back to America.”

bin Laden also came to grasp, perhaps self-servingly, the benefits of luring Washington into imperial overreach, of “bleeding America to the point of bankruptcy,” as he put it in 2004, through endless military expansionism, thus beating back its global sway and undermining its internal unity.

To an unnerving degree, the United States moved toward the enemy’s fantasies of what it might become — a nation divided in its sense of itself, exposed in its moral and political compromises, conflicted over wars it did not want but would not end.

“The most frightening aspect of this new threat . . . was the fact that almost no one took it seriously. It was too bizarre, too primitive and exotic.” That is how Lawrence Wright depicts the early impressions of bin Laden and his terrorist network among U.S. officials

The books traveling that road to 9/11 have an inexorable, almost suffocating feel to them, as though every turn invariably leads to the first crush of steel and glass.

With the system “blinking red,” as CIA Director George Tenet later told the 9/11 Commission, why were all these warnings not enough? Wright lingers on bureaucratic failings

Clarke’s conclusion is simple, and it highlights America’s we-know-better swagger, a national trait that often masquerades as courage or wisdom. “America, alas, seems only to respond well to disasters, to be undistracted by warnings,” he writes. “Our country seems unable to do all that must be done until there has been some awful calamity.”

The problem with responding only to calamity is that underestimation is usually replaced by overreaction. And we tell ourselves it is the right thing, maybe the only thing, to do.

A last-minute flight change. A new job at the Pentagon. A retirement from the fire station. The final tilt of a plane’s wings before impact. If the books about the lead-up to 9/11 are packed with unbearable inevitability, the volumes on the day itself highlight how randomness separated survival from death.

Had the World Trade Center, built in the late 1960s and early 1970s, been erected according to the city building code in effect since 1938, Dwyer and Flynn explain, “it is likely that a very different world trade center would have been built.

Instead, it was constructed according to a new code that the real estate industry had avidly promoted, a code that made it cheaper and more lucrative to build and own skyscrapers. “It increased the floor space available for rent . . . by cutting back on the areas that had been devoted, under the earlier law, to evacuation and exit,” the authors write. The result: Getting everybody out on 9/11 was virtually impossible.

The towers embodied the power of American capitalism, but their design embodied the folly of American greed. On that day, both conditions proved fatal.

Garrett Graff quotes Defense Department officials marveling at how American Airlines Flight 77 struck a part of the Pentagon that, because of new anti-terrorism standards, had recently been reinforced and renovated

“In any other wedge of the Pentagon, there would have been 5,000 people, and the plane would have flown right through the middle of the building.” Instead, fewer than 200 people were killed in the attack on the Pentagon, including the passengers on the hijacked jet. Chance and preparedness came together.

The bravery of police and firefighters is the subject of countless 9/11 retrospectives, but these books also emphasize the selflessness of civilians who morphed into first responders

The passengers had made phone calls when the hijacking began and had learned the fate of other aircraft that day. “According to one call, they voted on whether to rush the terrorists in an attempt to retake the plane,” the commission report states. “They decided, and acted.”

The civilians aboard United Airlines Flight 93, whose resistance forced the plane to crash into a Pennsylvania field rather than the U.S. Capitol, were later lionized as emblems of swashbuckling Americana

Such episodes, led by ordinary civilians, embodied values that the 9/11 Commission called on the nation to display. Except those values would soon be dismantled, in the name of security, by those entrusted to uphold them.

Lawyering to death.The phrase appears in multiple 9/11 volumes, usually uttered by top officials adamant that they were going to get things done, laws and rules be damned

“I had to show the American people the resolve of a commander in chief that was going to do whatever it took to win,” Bush explains. “No yielding. No equivocation. No, you know, lawyering this thing to death.” In “Against All Enemies,” Clarke recalls the evening of Sept. 11, 2001, when Bush snapped at an official who suggested that international law looked askance at military force as a tool of revenge. “I don’t care what the international lawyers say, we are going to kick some ass,” the president retorted.

The message was unmistakable: The law is an obstacle to effective counterterrorism

Except, they did lawyer this thing to death. Instead of disregarding the law, the Bush administration enlisted it. “Beginning almost immediately after September 11, 2001, [Vice President Dick] Cheney saw to it that some of the sharpest and best-trained lawyers in the country, working in secret in the White House and the United States Department of Justice, came up with legal justifications for a vast expansion of the government’s power in waging war on terror,

Through public declarations and secret memos, the administration sought to remove limits on the president’s conduct of warfare and to deny terrorism suspects the protections of the Geneva Conventions by redefining them as unlawful enemy combatants. Nothing, Mayer argues of the latter effort, “more directly cleared the way for torture than this.”

Tactics such as cramped confinement, sleep deprivation and waterboarding were rebranded as “enhanced interrogation techniques,” legally and linguistically contorted to avoid the label of torture. Though the techniques could be cruel and inhuman, the OLC acknowledged in an August 2002 memo, they would constitute torture only if they produced pain equivalent to organ failure or death, and if the individual inflicting such pain really really meant to do so: “Even if the defendant knows that severe pain will result from his actions, if causing such harm is not his objective, he lacks the requisite specific intent.” It’s quite the sleight of hand, with torture moving from the body of the interrogated to the mind of the interrogator.

the memo concludes that none of it actually matters. Even if a particular interrogation method would cross some legal line, the relevant statute would be considered unconstitutional because it “impermissibly encroached” on the commander in chief’s authority to conduct warfare

You have informed us. Experts you have consulted. Based on your research. You do not anticipate. Such hand-washing words appear throughout the memos. The Justice Department relies on information provided by the CIA to reach its conclusions; the CIA then has the cover of the Justice Department to proceed with its interrogations. It’s a perfect circle of trust.

In these documents, lawyers enable lawlessness. Another May 2005 memo concludes that, because the Convention Against Torture applies only to actions occurring under U.S. jurisdiction, the CIA’s creation of detention sites in other countries renders the convention “inapplicable.”

avid Cole describes the documents as “bad-faith lawyering,” which might be generous. It is another kind of lawyering to death, one in which the rule of law that the 9/11 Commission urged us to abide by becomes the victim.

Similarly, because the Eighth Amendment’s prohibition on cruel and unusual punishment is meant to protect people convicted of crimes, it should not apply to terrorism detainees — because they have not been officially convicted of anything. The lack of due process conveniently eliminates constitutional protections

Years later, the Senate Intelligence Committee would investigate the CIA’s post-9/11 interrogation program. Its massive report — the executive summary of which appeared as a 549-page book in 2014 — found that torture did not produce useful intelligence, that the interrogations were more brutal than the CIA let on, that the Justice Department did not independently verify the CIA’s information, and that the spy agency impeded oversight by Congress and the CIA inspector general.

“The CIA’s effectiveness representations were almost entirely inaccurate,” the Senate report concluded. It is one of the few lies of the war on terror unmasked by an official government investigation and public report, but just one of the many documented in the 9/11 literature.

Officials in the war on terror didn’t deceive or dissemble just with lawmakers or the public. In the recurring tragedy of war, they lied just as often to themselves.

“The decision to invade Iraq was one made, finally and exclusively, by the president of the United States, George W. Bush,” he writes.

n Woodward’s “Bush at War,” the president admitted that before 9/11, “I didn’t feel that sense of urgency [about al-Qaeda], and my blood was not nearly as boiling.”

A president initially concerned about defending and preserving the nation’s moral goodness against terrorism found himself driven by darker impulses. “I’m having difficulty controlling my bloodlust,” Bush confessed to religious leaders in the Oval Office on Sept. 20, 2001,

Bloodlust, moral certainty and sudden vulnerability make a dangerous combination. The belief that you are defending good against evil can lead to the belief that whatever you do to that end is good, too.

Draper distills Bush’s worldview: “The terrorists’ primary objective was to destroy America’s freedom. Saddam hated America. Therefore, he hated freedom. Therefore, Saddam was himself a terrorist, bent on destroying America and its freedom.”

The president assumed the worst about what Hussein had done or might do, yet embraced best-case scenarios of how an American invasion would proceed.

“Iraqis would rejoice at the sight of their Western liberators,” Draper recaps. “Their newly shared sense of national purpose would overcome any sectarian allegiances. Their native cleverness would make up for their inexperience with self-government. They would welcome the stewardship of Iraqi expatriates who had not set foot in Baghdad in decades. And their oil would pay for everything.”

It did not seem to occur to Bush and his advisers that Iraqis could simultaneously hate Hussein and resent the Americans — feelings that could have been discovered by speaking to Iraqis and hearing their concerns.

few books on the war that gets deep inside Iraqis’ aversion to the Americans in their midst. “What gives them the right to change something that’s not theirs in the first place?” a woman in a middle-class Baghdad neighborhood asks him. “I don’t like your house, so I’m going to bomb it and you can rebuild it again the way I want it, with your money?

The occupation did not dissuade such impressions when it turned the former dictator’s seat of government into its own luxurious Green Zone, or when it retrofitted the Abu Ghraib prison (“the worst of Saddam’s hellholes,” Shadid calls it) into its own chamber of horrors.

Shadid hears early talk of the Americans as “kuffar” (heathens), a 51-year-old former teacher complains that “we’ve exchanged a tyrant for an occupier.”

Shadid understood that governmental legitimacy — who gets to rule, and by what right — was a matter of overriding importance for Iraqis. “The Americans never understood the question,” he writes; “Iraqis never agreed on the answer.

When the United States so quickly shifted from liberation to occupation, it lost whatever legitimacy it enjoyed. “Bush handed that enemy precisely what it wanted and needed, proof that America was at war with Islam, that we were the new Crusaders come to occupy Muslim land,” Clarke writes. “It was as if Usama bin Laden, hidden in some high mountain redoubt, were engaging in long-range mind control of George Bush, chanting ‘invade Iraq, you must invade Iraq.’ ”

The foolishness and arrogance of the American occupation didn’t help. In “Imperial Life in the Emerald City: Inside Iraq’s Green Zone,” Rajiv Chandrasekaran explains how, even as daily security was Iraqis’ overwhelming concern, viceroy L. Paul Bremer, Bush’s man in Baghdad, was determined to turn the country into a model free-market economy, complete with new investment laws, bankruptcy courts and a state-of-the-art stock exchange.

a U.S. Army general, when asked by local journalists why American helicopters must fly so low at night, thus scaring Iraqi children, replied that the kids were simply hearing “the sound of freedom.”Message: Freedom sounds terrifying.

For some Americans, inflicting that terror became part of the job, one more tool in the arsenal. In “The Forever War” by Dexter Filkins, a U.S. Army lieutenant colonel in Iraq assures the author that “with a heavy dose of fear and violence, and a lot of money for projects, I think we can convince these people that we are here to help them.”

Chandrasekaran recalls the response of a top communications official under Bremer, when reporters asked about waves of violence hitting Baghdad in the spring of 2004. “Off the record: Paris is burning,” the official told the journalists. “On the record: Security and stability are returning to Iraq.”

the Iraq War, conjured in part on the false connections between Iraq and al-Qaeda, ended up helping the terrorist network: It pulled resources from the war in Afghanistan, gave space for bin Laden’s men to regroup and spurred a new generation of terrorists in the Middle East. “A bigger gift to bin Laden was hard to imagine,” Bergen writes.

“U.S. officials had no need to lie or spin to justify the war,” Washington Post reporter Craig Whitlock writes in “The Afghanistan Papers,” a damning contrast of the war’s reality vs. its rhetoric. “Yet leaders at the White House, the Pentagon and the State Department soon began to make false assurances and to paper over setbacks on the battlefield.” As the years passed, the deceit became entrenched, what Whitlock calls “an unspoken conspiracy” to hide the truth.

Afghanistan was where al-Qaeda, supported by the Taliban, had made its base — it was supposed to be the good war, the right war, the war of necessity and not choice, the war endorsed at home and abroad.

If Iraq was the war born of lies, Afghanistan was the one nurtured by them

Whitlock finds commanding generals privately admitting that they long fought the war “without a functional strategy.” That, two years into the conflict, Rumsfeld complained that he had “no visibility into who the bad guys are.”

That Army Lt. Gen. Douglas Lute, a former coordinator of Iraq and Afghanistan policy, acknowledged that “we didn’t have the foggiest idea of what we were undertaking.”

That U.S. officials long wanted to withdraw American forces but feared — correctly so, it turns out — that the Afghan government might collapse. “Bin Laden had hoped for this exact scenario,” Whitlock observes. “To lure the U.S. superpower into an unwinnable guerrilla conflict that would deplete its national treasury and diminish its global influence.”

All along, top officials publicly contradicted these internal views, issuing favorable accounts of steady progress

Bad news was twisted into good: Rising suicide attacks in Kabul meant the Taliban was too weak for direct combat, for instance, while increased U.S. casualties meant America was taking the fight to the enemy.

deceptions transpired across U.S. presidents, but the Obama administration, eager to show that its first-term troop surge was working, “took it to a new level, hyping figures that were misleading, spurious or downright false,” Whitlock writes. And then under President Donald Trump, he adds, the generals felt pressure to “speak more forcefully and boast that his war strategy was destined to succeed.”

in public, almost no senior government officials had the courage to admit that the United States was slowly losing,” Whitlock writes. “With their complicit silence, military and political leaders avoided accountability and dodged reappraisals that could have changed the outcome or shortened the conflict.”

Deputy Secretary of State Richard Armitage traveled to Moscow shortly after 9/11 to give officials a heads up about the coming hostilities in Afghanistan. The Russians, recent visitors to the graveyard of empires, cautioned that Afghanistan was an “ambush heaven” and that, in the words of one of them, “you’re really going to get the hell kicked out of you.”

a war should not be measured only by the timing and the competence of its end. We still face an equally consequential appraisal: How good was this good war if it could be sustained only by lies?

In the two decades since the 9/11 attacks, the United States has often attempted to reconsider its response

They are written as though intending to solve problems. But they can be read as proof that the problems have no realistic solution, or that the only solution is to never have created them.

the report sets the bar for staying so high that an exit strategy appears to be its primary purpose.

he counterinsurgency manual is an extraordinary document. Implicitly repudiating notions such as “shock and awe” and “overwhelming force,” it argues that the key to battling an insurgency in countries such as Iraq and Afghanistan is to provide security for the local population and to win its support through effective governance

It also attempts to grasp the nature of America’s foes. “Most enemies either do not try to defeat the United States with conventional operations or do not limit themselves to purely military means,” the manual states. “They know that they cannot compete with U.S. forces on those terms. Instead, they try to exhaust U.S. national will.” Exhausting America’s will is an objective that al-Qaeda understood well.

“Counterinsurgents should prepare for a long-term commitment,” the manual states. Yet, just a few pages later, it admits that “eventually all foreign armies are seen as interlopers or occupiers.” How to accomplish the former without descending into the latter? No wonder so many of the historical examples of counterinsurgency that the manual highlights, including accounts from the Vietnam War, are stories of failure.

“Soldiers and Marines are expected to be nation builders as well as warriors,” the manual proclaims, but the arduous tasks involved — reestablishing government institutions, rebuilding infrastructure, strengthening local security forces, enforcing the rule of law — reveal the tension at the heart of the new doctrine

In his foreword, Army Lt. Col. John Nagl writes that the document’s most lasting impact may be as a catalyst not for remaking Iraq or Afghanistan, but for transforming the Army and Marine Corps into “more effective learning organizations,” better able to adapt to changing warfare. And in her introduction, Sarah Sewall, then director of Harvard’s Carr Center for Human Rights Policy, concludes that its “ultimate value” may be in warning civilian officials to think hard before engaging in a counterinsurgency campaign.

“The thing that got to everyone,” Finkel explains in the latter book, “was not having a defined front line. It was a war in 360 degrees, no front to advance toward, no enemy in uniform, no predictable patterns, no relief.” It’s a powerful summation of battling an insurgency.

Hitting the wrong house is what counterinsurgency doctrine is supposed to avoid. Even successfully capturing or killing a high-value target can be counterproductive if in the process you terrorize a community and create more enemies. In Iraq, the whole country was the wrong house. America’s leaders knew it was the wrong house. They hit it anyway.

Another returning soldier, Nic DeNinno, struggles to tell his wife about the time he and his fellow soldiers burst into an Iraqi home in search of a high-value target. He threw a man down the stairs and held another by the throat. After they left, the lieutenant told him it was the wrong house. “The wrong f---ing house,” Nic says to his wife. “One of the things I want to remember is how many times we hit the wrong house.”

“As time passes, more documents become available, and the bare facts of what happened become still clearer,” the report states. “Yet the picture of how those things happened becomes harder to reimagine, as that past world, with its preoccupations and uncertainty, recedes.” Before making definitive judgments, then, they ask themselves “whether the insights that seem apparent now would really have been meaningful at the time.”

Two of the latest additions to the canon, “Reign of Terror” by Spencer Ackerman and “Subtle Tools” by Karen Greenberg, draw straight, stark lines between the earliest days of the war on terror and its mutations in our current time, between conflicts abroad and divisions at home. These works show how 9/11 remains with us, and how we are still living in the ruins.

When Trump declared that “we don’t have victories anymore” in his 2015 speech announcing his presidential candidacy, he was both belittling the legacy of 9/11 and harnessing it to his ends. “His great insight was that the jingoistic politics of the War on Terror did not have to be tied to the War on Terror itself,” Ackerman writes. “That enabled him to tell a tale of lost greatness.” And if greatness is lost, someone must have taken it.

“Trump had learned the foremost lesson of 9/11,” Ackerman writes, “that the terrorists were whomever you said they were.”

The backlash against Muslims, against immigrants crossing the southern border and against protesters rallying for racial justice was strengthened by the open-ended nature of the global war on terror.

the war is not just far away in Iraq or Afghanistan, in Yemen or Syria, but it’s happening here, with mass surveillance, militarized law enforcement and the rebranding of immigration as a threat to the nation’s security rather than a cornerstone of its identity

the Authorization for Use of Military Force, drafted by administration lawyers and approved by Congress just days after the attacks, as the moment when America’s response began to go awry. The brief joint resolution allowed the president to use “all necessary and appropriate force” against any nation, organization or person who committed the attacks, and to prevent any future ones.

It was the “Ur document in the war on terror and its legacy,” Greenberg writes. “Riddled with imprecision, its terminology was geared to codify expansive powers.” Where the battlefield, the enemy and the definition of victory all remain vague, war becomes endlessly expansive, “with neither temporal nor geographical boundaries.”

This was the moment the war on terror was “conceptually doomed,” Ackerman concludes. This is how you get a forever war.

There were moments when an off-ramp was visible. The killing of bin Laden in 2011 was one such instance, Ackerman argues, but “Obama squandered the best chance anyone could ever have to end the 9/11 era.”

The author assails Obama for making the war on terror more “sustainable” through a veneer of legality — banning torture yet failing to close the detention camp at Guantánamo Bay and relying on drone strikes that “perversely incentivized the military and the CIA to kill instead of capture.”

There would always be more targets, more battlefields, regardless of president or party. Failures became the reason to double down, never wind down.

The longer the war went on, the more that what Ackerman calls its “grotesque subtext” of nativism and racism would move to the foreground of American politics

Absent the war on terror, it is harder to imagine a presidential candidate decrying a sitting commander in chief as foreign, Muslim, illegitimate — and using that lie as a successful political platform.

Absent the war on terror, it is harder to imagine a travel ban against people from Muslim-majority countries. Absent the war on terror, it is harder to imagine American protesters labeled terrorists, or a secretary of defense describing the nation’s urban streets as a “battle space” to be dominated

In his latest book on bin Laden, Bergen argues that 9/11 was a major tactical success but a long-term strategic failure for the terrorist leader. Yes, he struck a vicious blow against “the head of the snake,” as he called the United States, but “rather than ending American influence in the Muslim world, the 9/11 attacks greatly amplified it,” with two lengthy, large-scale invasions and new bases established throughout the region.

“A vastly different America has taken root” in the two decades since 9/11, Greenberg writes. “In the name of retaliation, ‘justice,’ and prevention, fundamental values have been cast aside.”

the legacy of the 9/11 era is found not just in Afghanistan or Iraq, but also in an America that drew out and heightened some of its ugliest impulses — a nation that is deeply divided (like those “separated states” bin Laden imagined); that bypasses inconvenient facts and embraces conspiracy theories; that demonizes outsiders; and that, after failing to spread freedom and democracy around the world, seems less inclined to uphold them here

Seventeen years after the 9/11 Commission called on the United States to offer moral leadership to the world and to be generous and caring to our neighbors, our moral leadership is in question, and we can barely be generous and caring to ourselves.

Still reeling from an attack that dropped out of a blue sky, America is suffering from a sort of post-traumatic stress democracy. It remains in recovery, still a good country, even if a broken good country.

9/11 was a test. Thebooks of the lasttwo decades showhow America failed.

Deep within the catalogue of regrets that is the 9/11 Commission report

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

But SB 8, written to sidestep that kind of legal challenge, explicitly forbids any “officer or employee of a state or local governmental entity” in Texas from enforcing it. The idea is that, if no state official can enforce the law, abortion rights plaintiffs have no one to sue.

This scheme, as Chief Justice John Roberts noted in his dissenting opinion in Whole Woman’s Health, “is not only unusual, but unprecedented.” As Justice Sonia Sotomayor wrote in her dissent, the law is “engineered to prohibit women from exercising their constitutional rights and evade judicial scrutiny.”

The Texas law was specifically drafted to evade judicial review.

The second and more difficult question is why the federal government should be the plaintiff of last resort. DOJ rests the lion’s share of its argument on In re Debs (1895), a Gilded Age decision giving federal courts extraordinary authority to halt union activities that disrupt interstate commerce (Debs arose out of a massive railroad strike that threw shipping in the Midwest into disarray).

Ordinarily, if a state law permitted private parties to sue abortion providers in state court, those providers could wait to be sued, and then argue that the law permitting them to be sued is unconstitutional during that state court proceeding. But SB 8 is designed to frustrate this normal process as well. For one thing, it contains a simply extraordinary provision stating that SB 8 defendants may not assert their “belief that the requirements of this subchapter are unconstitutional or were unconstitutional” as a defense in state court.

Although this Court is unlikely to protect abortion rights, there are still potent reasons why even anti-abortion justices should oppose SB 8. For one thing, if Texas can offer bounties to anti-abortion plaintiffs — and evade judicial review in the process — other, bluer states could pass copycat laws. Do the justices really want New York to pass a law permitting “any person” to collect a bounty from gun owners?

I don’t have any illusions that this Supreme Court will hold that doctors who perform abortions cannot be punished. But I’d hope that we could all agree that doctors who are falsely accused of violating a state law should not be punished. If due process means anything, it should mean that Dr. Smith should get her day in court before she is forced into bankruptcy.

How did this happen? How did cultural globalization in the twentieth century travel along such a one-way path?

For the American delegates, the question belonged to the higher plane of moral principle. The delegation wanted to extend into the international sphere the classic liberal notion of press freedom, which would prohibit governments from censoring the news and enshrine the rights of journalists to access sources and to dispatch the news across borders.

Carlos Romulo, the legendary Philippine diplomat and journalist who had uncovered Japanese atrocities in his country, went so far as to call freedom of information the “touchstone of all the freedoms to which the UN is consecrated.” World War II had been horrifying in scale and severity; information barriers were believed to have played a part. Japan’s and Germany’s bids for autarky had insulated their citizens from global currents, incubated aggressive nationalism, and, from the perspective of American policymakers, driven the world into war.

The answer, Sam Lebovic’s new book, A Righteous Smokescreen: Postwar America and the Politics of Cultural Globalization, convincingly argues, largely comes down to American policy in the middle decades of the twentieth century.

But when 600 or so journalists, media magnates, and diplomats arrived in Geneva in 1948 to draft the press freedom clauses for both the U.N. Declaration of Human Rights and the International Covenant on Civil and Political Rights, definitional difficulties abounded. Between what the U.S. meant by “freedom of information” and what the rest of the world needed lay a vast expanse.

By 1949, American films made up around half of the European and Asian markets, 62 percent of the African market, 64 percent of the South American market, and three-quarters of the Central American and Pacific markets.

Back in Geneva, delegates from the global south pointed out these immense inequalities. S.A. Brelvi of India called for the wealthier nations to equitably allocate the “supplies of physical facilities and technical equipment for the dissemination of information between all countries.” But the American delegates refused the idea that global inequality itself was a barrier to the flow of information across borders. Besides, they argued, redistributive measures violated the sanctity of the press

The U.S. was able to strong-arm its notion of press freedom—a hybrid combining the American Constitution’s First Amendment and a consumer right to receive information across borders—at the conference, but the U.N.’s efforts to define and ensure the freedom of information ended in a stalemate.

The failure to redistribute resources, the lack of multilateral investment in producing more balanced international flows of information, and the might of the American culture industry at the end of the war—all of this amounted to a guarantee of the American right to spread information and culture across the globe.

But representatives of other states had more earthly concerns. The war had tilted the planet’s communications infrastructure to America’s advantage. In the late 1940s, for example, the U.S. consumed 63 percent of the world’s newsprint supply; to put it more starkly, the country consumed as much newsprint in a single day as India did over the course of a year. A materials shortage would hamper newspaper production across much of the world into at least the 1950s (though this did provide the fringe benefit of enabling political interference with the press: The CIA supplied Italian anti-Communist newspapers with newsprint in the lead-up to the 1948 election, while the U.S. occupation administration in Japan cut the allocation of newsprint to local Communist newspapers). The war had also laid low foreign news agencies—Germany’s Wolff and France’s Havas had disappeared entirely—and not a single news agency called the global south home. At the same time, America’s Associated Press and United Press International both had plans for global expansion,

The focus of A Righteous Smokescreen is broader. It is a study of both sides of the globalization ledger: As the U.S. exported its culture in astonishing amounts, it imported very little

it remained surprisingly cut off from the rest of the world. A parochial empire, but with a global reach.

Containment, Lebovic shows, wasn’t just a territorial strategy committed to holding back Soviet expansion into Europe and Asia. Rather, it began at the American border and it involved policing the flow of people and ideas that were potentially inimical to the American status quo

An Iron Curtain, to rejig Churchill’s famous speech about Soviet policies in Eastern Europe, had descended around the U.S.

can be seen in the American national security state’s efforts to block out “propaganda.”

Throughout most of the second half of the twentieth century, Americans had to seek government approval to purchase magazines, books, and even stamps from China, North Korea, Cambodia, Cuba, and Vietnam.

An untold number of parcels—untold because for several years of the program they didn’t have to notify would-be recipients that the government had decided to destroy their mail—never arrived at their American destination.

even without direct state interference, American culture had inward-looking tendencies

Few of the films shown in American cinemas were foreign (largely a result of the Motion Picture Production Code, which the industry began imposing on itself in 1934; code authorities prudishly disapproved of the sexual mores of European films)

Few television programs came from abroad (about 1 percent, in fact, in the early 1970s—compared to 12 percent in Britain and 84 percent in Guatemala)

Few newspapers subscribed to foreign news agencies. Even fewer had foreign correspondents. And very few pages in those papers were devoted to foreign affairs.

In 1910, nearly 15 percent of the American population had been born overseas, but by 1960, that portion shrank to only 5.4 percent. Similarly, bureaucrats in the burgeoning national security state kept a variety of radicals from entering and leaving the country. Since World War I, foreign anarchists, Communists, and others—ranging from German spies and saboteurs to Black internationalists—found the gate to the U.S. bolt-locked. Likewise, Americans whom the State Department identified as holding so-called “alien” beliefs were barred from the exits.

In-person contact with foreigners was limited, too, thanks to travel controls.

Two exhibitions, one in the U.S., the other in the Soviet Union: Yet neither artist could attend their own exhibition because of American border policies. The State Department had denied Picasso a visa back in 1950 on ideological grounds, and it refused to issue a passport to Kent because of his alleged sympathies for communism.

So-called “area restrictions” forbade all Americans from traveling to countries in the Communist bloc.

in the 1940s and ’50s, hundreds or even thousands of Americans—more precise data from the innards of the national security state is rather difficult to come by—were denied passports and many, many more never thought to apply for one in the first place, out of fear of what a background check might turn up.

(about half of all foreign scientists who sought to enter the U.S. in the early postwar years encountered visa difficulties).

how “actively engaged” was the U.S., really? The answer in Menand’s exploration of culture in the early Cold War is: very. Menand points to the rest of the world’s ravenous consumption of American entertainment as evidence, as well as how Americans “welcomed and adapted art, ideas, and entertainment from other countries”

as Louis Menand notes on the first page of his recent book, The Free World, it was an era in which “the United States was actively engaged with the rest of the world.”

in Lebovic’s telling, this was a narrow stream. A lot of its contents were foreign imports that had already been thoroughly Americanized.

The flow of foreign culture and ideas into the U.S. was so limited that building bridges with the rest of the world became an important impulse of the social movements of the 1960s and ’70s,

The government says it will get the Royal Navy to police the seas and send applicants away, reportedly to be processed in Ghana or Rwanda. None of that bluster survived the briefest encounter with reality.

This week the Tories took credit for the fact that Britain has the fastest annual growth rate in the G7 and that output regained its pre-pandemic level in November, ahead of forecasts. But they have not grappled with Brexit’s probable long-term hit to productivity, of about 4%.

unveiled plenty of big economy-boosting ideas, including levelling up prosperity across Britain, tearing down planning restrictions and making Britain a science superpower.

To get Brexit done, Mr Johnson agreed on a customs border in the Irish Sea and then proceeded to pretend he hadn’t.

He argued that Britain would escape the regulatory straitjacket of the European Union, but he has avoided doing much deregulating—which, however swashbuckling it sounds in a headline, tends in real life to be unpopular.

Mr Johnson has crumbled because he repeatedly failed to tell the truth to Parliament and the nation about Downing Street’s bacchanals.

almost half of Conservative Party members still believe that Mr Johnson’s account of Number 10’s revels is true, compared with just 13% of all voters in a poll published a few days earlier.

the excesses of Partygate have shown that the post-Brexit Tory party has lost touch with reality.

It is a strength of the parliamentary system that MPs can bring about a rapid change of direction. If the Conservative Party is to find its way, it will need a new leader. If reforms are to take root, they will need detailed planning and sustained application.

The need to let the Baltic states go was clear—and when they left the Soviet Union in 1990, Solzhenitsyn, Yeltsin and most of Russia rallied against revanchist attempts to keep them in. Much the same was true of Central Asia and the Caucasus; they were colonies. Belarus and Ukraine were part of the metropolitan core. The bonds which tied “Little Russians” (ie Ukrainians), “Great Russians” and Belarusians together, Solzhenitsyn argued, must be defended by all means short of war.

The agreement reached, in draft form, at 4am on Sunday morning achieved those aims with a rather neat piece of casuistry. For Russia simply to have followed Ukraine into independence would have left moot the question of the Soviet Union’s residual powers. So instead they abolished the union itself.

“the Kyivan myth of origins…became the cornerstone of Muscovy’s ideology as the polity evolved from a Mongol dependency to a sovereign state and then an empire.” Russian empire required Ukraine; and Russia had no history other than one of empire. The idea of Kyiv as just the capital of a neighbouring country was unimaginable to Russians.

When, as the economy worsened, Mr Gorbachev went to President George Bush for $10bn-15bn, Bush’s top concern was the nuclear threat. The same worry had led him to oppose Ukraine’s secession in a speech given just before the August coup. “Do you realise what you’ve done?” Mr Gorbachev demanded of Mr Shushkevich. “Once Bush finds out about this, what then?”

Yeltsin was overcome by a sense of lightness and freedom. “In signing this agreement,” he later recalled, “Russia was choosing a different path, a path of internal development rather than an imperial one…She was throwing off the traditional image of ‘potentate of half the world’, of armed conflict with Western civilisation, and the role of policeman in the resolution of ethnic conflicts. The last hour of the Soviet empire was chiming.” Maybe the convoluted interdependency of Russia and Ukraine did not matter as much as people thought; maybe democratic nationhood was enough. Maybe the problem had been a failure of imagination.

But when pollsters asked people what they expected of their incoming president, reducing this corruption was not their highest priority. The standing of the state was. Russians wanted a strong state and one respected abroad. As Mr Putin’s successful manifesto put it,

The strong state which provided an effective cover for kleptocracy in Mr Putin’s Russia was not an option for Mr Kuchma’s similarly oligarchic Ukraine. It had no real history as a state, let alone a strong one. Its national myth was one of Cossacks riding free. So in Ukraine the stealing was instead dressed up in terms of growing into that distinctive national identity. The essence of the argument was simple. As Mr Kuchma put it in a book published in 2003, “Ukraine is not Russia”.

Mr Kuchma could have used force against them; Mr Putin encouraged him to do so. But various considerations, including Western opprobrium, argued against it.

Mr Putin’s return to the presidency in 2012 came at a time when the global financial crisis had choked the Russian economy.

The degree to which Ukraine was not Russia became clearer, though, in 2004, when a rigged presidential election saw hundreds of thousands of Ukrainians protesting in the streets.

Mr Yanukovych did not want to be Russia’s vassal. Nor did he share western Europe’s values—especially when applied to matters of anti-corruption. But eventually he had to choose a side. At a secret meeting in Moscow in November 2013, as European leaders were preparing to sign their agreement with Ukraine, he was promised a $15bn credit line with $3bn paid up front. He ditched the European deal. And at 4am on November 30th his goons bludgeoned a few dozen students protesting against his betrayal in Kyiv’s Independence Square, known as Maidan.

This was far worse, for Mr Putin, than the Orange revolution. Ukraine had made geopolitical reality, to coin a phrase, of the independence it had claimed two decades before. Its demands for dignity resonated with Russia’s middle class and some of its elite, making it a genuinely dangerous example. So Mr Putin annexed Crimea and started a war in Donbas.

According to Russian state media, Mr Putin was not undermining a revolution against a corrupt regime quite like his own; he was protecting the Russian people and language from extermination at the hands of western Ukrainian fascists. The relevance to Russia of the issues that had led to what was being called in Ukraine “the revolution of dignity” was thus obscured

the annexation was supported by nearly 90% of the Russian population.

tract published in both Russian, Ukrainian and English in July 2021, Mr Putin described how the inheritors of “Ancient Rus” had been torn apart by hostile powers and treacherous elites, and how Ukraine had been turned from being “not Russia” into an anti-Russia, an entity fundamentally incompatible with Russia’s goals.

The only way Russia can escape chaos, he argued, is to export it to a neighbouring country.

Ukraine is not a province, or a colony; it is a beleaguered nation in a messy, perilous process of self-realisation. Belarus, for its part, is a grim illustration of how “severe and inflexible” things have to get in order to stop such aspirations welling up. Mr Lukashenko has met a nationalist resurgence with ever more brutal and well-orchestrated repression—a bloody irony given that he helped start it.

But change is afoot; it can be seen in the way that demography increasingly trumps regional allegiance. Even in the east nearly 60% of those born since 1991 see their future as in the EU—countrywide, the figure is 75%. All told 90% want Ukraine to stay independent, and nearly 80% are optimistic about its future.

That is why Alexei Navalny was first poisoned and is now jailed. As the leader of the opposition to Mr Putin he has championed the idea of Russia not as an empire but as a civic nation: a state for the people. It is why Russia has recently become much more repressive. It is why Mr Putin cannot tolerate a true peace on his borders.

He also "exchanged emails with [former Washington Football Team president Bruce Allen] and other men that included photos of women wearing only bikini bottoms, including one photo of two Washington team cheerleaders."

He also used racist tropes to describe NFLPA executive director DeMaurice Smith.

Gruden's tenure offered more bad than good.

the 2018 campaign that included trading away Khalil Mack and Amari Cooper, things started to turn for the better in recent years, as the Raiders became more competitive.

On Thursday, Russian officials said the talks had not yielded results, and one senior diplomat said they were approaching “a dead end.”

“Ukrainians! All your personal data was uploaded to the internet,” the message read. “All data on the computer is being destroyed. All information about you became public. Be afraid and expect the worst.”

The attack came within hours of the conclusion of talks between Russia and the United States and NATO that were intended to find a diplomatic resolution after Russia massed tens of thousands of troops near the border with Ukraine.

On Friday, the Biden administration also accused Moscow of sending saboteurs into eastern Ukraine to stage an incident that could provide Russia with a pretext for invasion.

Moscow has demanded sweeping security concessions, including a promise not to accept Ukraine into the NATO alliance. But the cyberattack Friday led to immediate pledges of support and closer cooperation with Ukraine from NATO and the European Union, exactly the opposite of what Russian diplomats had said they were seeking.

“the United States and its allies are actually saying ‘no’ to key elements of these texts,” referring to two draft treaties on security issues that Russia had proposed to NATO and the United States.

A Russian military spyware strain called X-Agent, or Sofacy, that Ukrainian cyber experts say was used to hack Ukraine’s Central Election Commission during a 2014 presidential election, for example, was later found in the server of the Democratic National Committee in the United States after the electoral hacking attacks in 2016.

Ukrainian government websites began crashing a few hours later, according to the Ukrainian Foreign Ministry, which said the cyberattack occurred overnight from Thursday to Friday.

By morning, the hack had crippled much of the government’s public-facing digital infrastructure, including the most widely used site for handling government services online, Diia. The smartphone app version of the program was still operating, the Ukrainska Pravda newspaper reported. Diia also has a role in Ukraine’s coronavirus response and in encouraging vaccination.

The websites of the president and the defense ministry remained online. Ukrainian officials said the attack targeted 70 government websites.

the hacking activity targeting state bodies could be a part of this psychological attack on Ukrainians.”

“I strongly condemn the cyberattacks on the Ukrainian Government,” Mr. Stoltenberg said in a statement, adding, “NATO & Ukraine will step up cyber cooperation & we will continue our strong political & practical support.”

Sophisticated cybertools have turned up in standoffs between Israel and Iran, and the United States blamed Russia for using hacking to influence the 2016 election in the United States to benefit Donald J. Trump.

The U.S. government has traced some of the most drastic cyberattacks of the past decade to Russian actions in Ukraine.

“We have not seen such a significant attack on government organizations in some time,” it said. “We suggest the current attack is tied to the recent failure of Russian negotiations on Ukraine’s future in NATO,” it added, referring to Moscow’s talks with the West.

The malware, known as NotPetya, had targeted a type of Ukrainian tax preparation software but apparently spun out of control, according to experts.

It coincided with the assassination of a Ukrainian military intelligence officer in a car bombing in Kyiv and the start of an E.U. policy granting Ukrainians visa-free travel, an example of the type of integration with the West that Russia has opposed.

But NotPetya spread around the world, with devastating results, illustrating the risks of collateral damage from military cyberattacks for people and businesses whose lives are increasingly conducted online, even if they live far from conflict zones

The total global cost is thought to be far higher