Climate Cast: What Exxon knew in 1977

Inside Climate News reported this week that Exxon scientists knew as early as 1977 that the pace of burning carbon based fossil fuels would change earth's climate.

The eye opening report confirms what many climate watchers already knew — that even in the the 1970s most climate science said the earth was heading for a dramatic warming trend. This week we found out some of that early scientific research was conducted by Exxon scientists.

Here's a clip from the first installment of the series at Inside Climate News.

At a meeting in Exxon Corporation's headquarters, a senior company scientist named James F. Black addressed an audience of powerful oilmen. Speaking without a text as he flipped through detailed slides, Black delivered a sobering message: carbon dioxide from the world's use of fossil fuels would warm the planet and could eventually endanger humanity.

"In the first place, there is general scientific agreement that the most likely manner in which mankind is influencing the global climate is through carbon dioxide release from the burning of fossil fuels," Black told Exxon's Management Committee, according to a written version he recorded later.

It was July 1977 when Exxon's leaders received this blunt assessment, well before most of the world had heard of the looming climate crisis.

A year later, Black, a top technical expert in Exxon's Research & Engineering division, took an updated version of his presentation to a broader audience. He warned Exxon scientists and managers that independent researchers estimated a doubling of the carbon dioxide (CO2) concentration in the atmosphere would increase average global temperatures by 2 to 3 degrees Celsius (4 to 5 degrees Fahrenheit), and as much as 10 degrees Celsius (18 degrees Fahrenheit) at the poles.  Rainfall might get heavier in some regions, and other places might turn to desert.

"Some countries would benefit but others would have their agricultural output reduced or destroyed," Black said, in the written summary of his 1978 talk.

The detailed reporting is turning heads, and opening eyes to the likely follow-up questions. What precisely did Exxon scientists know and when did they know it? How much did the company (and the larger oil and gas industry) later deliberately create a climate of doubt about the likely cause and effects of climate change?

This clip from this week's PBS Frontline piece digs into detail about how Exxon handled the discovery that its products would likely dramatically change earth's climate system.

Now many are asking another inevitable question. Since Exxon knew in 1977 its products would dramatically change earth's climate, who pays for the human and economic damages that can be proven? That's a question of law that will very likely play out in U.S. courts in the coming decades.

Bill McKibben, founder of 350.org has more perspective on the Exxon revelations in The New Yorker.

Everyone who’s been paying attention has known about climate change for decades now. But it turns out Exxon didn’t just “know” about climate change: it conducted some of the original research. In the nineteen-seventies and eighties, the company employed top scientists who worked side by side with university researchers and the Department of Energy, even outfitting one of the company’s tankers with special sensors and sending it on a cruise to gather CO2 readings over the ocean. By 1977, an Exxon senior scientist named James Black was, according to his own notes, able to tell the company’s management committee that there was “general scientific agreement” that what was then called the greenhouse effect was most likely caused by man-made CO2; a year later, speaking to an even wider audience inside the company, he said that research indicated that if we doubled the amount of carbon dioxide in the planet’s atmosphere, we would increase temperatures two to three degrees Celsius. That’s just about where the scientific consensus lies to this day. “Present thinking,” Black wrote in summary, “holds that man has a time window of five to ten years before the need for hard decisions regarding changes in energy strategies might become critical.”

Those numbers were about right, too. It was precisely ten years later—after a decade in which Exxon scientists continued to do systematic climate research that showed, as one internal report put it, that stopping “global warming would require major reductions in fossil fuel combustion”—that NASA scientist James Hansen took climate change to the broader public, telling a congressional hearing, in June of 1988, that the planet was already warming. And how did Exxon respond? By saying that its own independent research supported Hansen’s findings? By changing the company’s focus to renewable technology?

That didn’t happen. Exxon responded, instead, by helping to set up or fund extreme climate-denial campaigns. (In a blog post responding to the I.C.N. report, the company said that the documents were “cherry-picked” to “distort our history of pioneering climate science research” and efforts to reduce emissions.) The company worked with veterans of the tobacco industry to try and infuse the climate debate with doubt. Lee Raymond, who became the Exxon C.E.O. in 1993—and was a senior executive throughout the decade that Exxon had studied climate science—gave a key speech to a group of Chinese leaders and oil industry executives in 1997, on the eve of treaty negotiations in Kyoto. He told them that the globe was cooling, and that government action to limit carbon emissions “defies common sense.” In recent years, it’s gotten so hot (InsideClimate’s exposé coincided with the release of data showing that this past summer was the United States’ hottest in recorded history) that there’s no use denying it any more; Raymond’s successor, Rex Tillerson, has grudgingly accepted climate change as real, but has referred to it as an “engineering problem.” In May, at a shareholders’ meeting, he mocked renewable energy, and said that “mankind has this enormous capacity to deal with adversity,” which would stand it in good stead in the case of “inclement weather” that “may or may not be induced by climate change.”

This week's reporting on what some in the oil and gas industry knew about climate change in the 1970s will likely change the dynamic of what's left of the climate denial machine. It will also likely set off an explosion of massive class-action lawsuits that could dwarf the big tobacco settlements in the recent past.

Wait for it.