Losing Earth: The Decade We Almost Stopped Climate Change
Aug 06 2018 | 10:07:51
The world has warmed more than one degree Celsius since the Industrial Revolution. The Paris climate agreement — the nonbinding, unenforceable and already unheeded treaty signed on Earth Day in 2016 — hoped to restrict warming to two degrees. The odds of succeeding, according to a recent study based on current emissions trends, are one in 20. If by some miracle we are able to limit warming to two degrees, we will only have to negotiate the extinction of the world’s tropical reefs, sea-level rise of several meters and the abandonment of the Persian Gulf. The climate scientist James Hansen has called two-degree warming “a prescription for long-term disaster.” Long-term disaster is now the best-case scenario. Three-degree warming is a prescription for short-term disaster: forests in the Arctic and the loss of most coastal cities. Robert Watson, a former director of the United Nations Intergovernmental Panel on Climate Change, has argued that three-degree warming is the realistic minimum. Four degrees: Europe in permanent drought; vast areas of China, India and Bangladesh claimed by desert; Polynesia swallowed by the sea; the Colorado River thinned to a trickle; the American Southwest largely uninhabitable. The prospect of a five-degree warming has prompted some of the world’s leading climate scientists to warn of the end of human civilization.
Is it a comfort or a curse, the knowledge that we could have avoided all this?
Because in the decade that ran from 1979 to 1989, we had an excellent opportunity to solve the climate crisis. The world’s major powers came within several signatures of endorsing a binding, global framework to reduce carbon emissions — far closer than we’ve come since. During those years, the conditions for success could not have been more favorable. The obstacles we blame for our current inaction had yet to emerge. Almost nothing stood in our way — nothing except ourselves.
Nearly everything we understand about global warming was understood in 1979. By that year, data collected since 1957 confirmed what had been known since before the turn of the 20th century: Human beings have altered Earth’s atmosphere through the indiscriminate burning of fossil fuels. The main scientific questions were settled beyond debate, and as the 1980s began, attention turned from diagnosis of the problem to refinement of the predicted consequences. Compared with string theory and genetic engineering, the “greenhouse effect” — a metaphor dating to the early 1900s — was ancient history, described in any Introduction to Biology textbook. Nor was the basic science especially complicated. It could be reduced to a simple axiom: The more carbon dioxide in the atmosphere, the warmer the planet. And every year, by burning coal, oil and gas, humankind belched increasingly obscene quantities of carbon dioxide into the atmosphere.
Why didn’t we act? A common boogeyman today is the fossil-fuel industry, which in recent decades has committed to playing the role of villain with comic-book bravado. An entire subfield of climate literature has chronicled the machinations of industry lobbyists, the corruption of scientists and the propaganda campaigns that even now continue to debase the political debate, long after the largest oil-and-gas companies have abandoned the dumb show of denialism. But the coordinated efforts to bewilder the public did not begin in earnest until the end of 1989. During the preceding decade, some of the largest oil companies, including Exxon and Shell, made good-faith efforts to understand the scope of the crisis and grapple with possible solutions.
Nor can the Republican Party be blamed. Today, only 42 percent of Republicans know that “most scientists believe global warming is occurring,” and that percentage is falling. But during the 1980s, many prominent Republicans joined Democrats in judging the climate problem to be a rare political winner: nonpartisan and of the highest possible stakes. Among those who called for urgent, immediate and far-reaching climate policy were Senators John Chafee, Robert Stafford and David Durenberger; the E.P.A. administrator, William K. Reilly; and, during his campaign for president, George H.W. Bush. As Malcolm Forbes Baldwin, the acting chairman of the president’s Council for Environmental Quality, told industry executives in 1981, “There can be no more important or conservative concern than the protection of the globe itself.” The issue was unimpeachable, like support for veterans or small business. Except the climate had an even broader constituency, composed of every human being on Earth.