Senate Report · 2024 The Joint Staff Investigation — Exxon, Chevron, Shell, BP, API

A U.S. Senate Budget Committee and House Oversight joint investigation concluded, citing internal documents, that fossil fuel companies have understood since at least the 1960s that burning their products causes climate change — then worked for decades to deny the science and undermine public understanding, evolving from outright denial into "deception, disinformation, and doublespeak."