Center for Climate Integrity: “Evidence shows that Big Oil & Gas knew as early as the 1960s that their products would lead to climate change, and that it could have disastrous impacts worldwide. This collection of internal company documents has been compiled thanks to the work of journalists, independent researchers, and academics.

• They Knew Scientists –  and executives at fossil fuel companies such as Exxon knew since as early as 1968 that burning fossil fuels would raise global temperatures, which could lead to “catastrophic” consequences.
• They Lied – Voices from inside and outside the industry recognize that addressing climate change could require burning fewer fossil fuels — a threat to industry profits. After deciding that a transition to clean energy would be bad for business, climate polluters such as Exxon deliberately sowed doubt to undermine scientific truths.
• They’re Still Lying – As the science became overwhelming and public understanding of climate change grew, companies shifted from denying climate science to portraying themselves as part of the solution.”