It wasn’t just Exxon that knew fossil fuels were cooking the planet.

New investigative reporting by Neela Banerjee with Inside Climate News revealed on Tuesday that scientists and engineers from nearly every major U.S. and multinational oil and gas company may have for decades known about the impacts of carbon emissions on the climate.

Between 1979 and 1983, the American Petroleum Institute (API), the industry’s most powerful lobby group, ran a task force for fossil fuel companies to “monitor and share climate research,” according to internal documents obtained by Inside Climate News.

According to the reporting:

The ‘CO2 and Climate Task Force,’ which changed in 1980 its name to the ‘Climate and Energy Task Force,’ included researchers from Exxon, Mobil, Chevron, Amoco, Phillips, Texaco, Shell, Sunoco, and Sohio, among others.

One memo by an Exxon task force representative pointed to 1979 “background paper on CO2,” which “predicted when the first clear effects of climate change might be felt,” noting that the concentration of carbon dioxide in the atmosphere was rising steadily.

And at a February 1980 meeting in New York, the task force invited Professor John A. Laurmann of Stanford University to brief members about climate science.

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