“Exxon knew.” Those words have rocked climate change politics, as investigations revealed industry giants knew of the danger of greenhouse emissions even as they undermined scientists. But coal knew, too—as early as 1966, a newly unearthed journal shows.

“Exxon knew.” Those words have rocked climate change politics, as investigations revealed industry giants knew of the danger of greenhouse emissions even as they undermined scientists.

But coal knew, too—as early as 1966, a newly unearthed journal shows. https://t.co/kLeVKiAdlM

— Mother Jones (@MotherJones) November 29, 2019