Climate Deception

Big Oil companies have known for decades that burning fossil fuels could lead to "catastrophic" climate change.

They lied to us.

Instead of warning the public, Big Oil masterminded an ongoing campaign of denial, disinformation, and deception to delay climate action and protect their profits.

Now, communities are footing the bill to adapt to and recover from the growing climate damages the fossil fuel industry knowingly caused.

Explore our archives to uncover evidence showing how Big Oil knew their products would cause climate change — and are still lying about it.

Deception Timeline

They Knew

Scientists and executives at oil and gas companies knew more than 50 years ago that burning fossil fuels would raise global temperatures and could lead to "catastrophic" consequences.

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They Lied

After deciding to prioritize industry profits over public health and safety, climate polluters deliberately sowed doubt to undermine scientific evidence.

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They're Still Lying

As climate change becomes undeniable, Big Oil is doubling down on fossil fuels while falsely claiming to be part of the solution.

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Dig Deeper

Big Oil is Still Lying

Five ways the fossil fuel industry deceives the public and policymakers about its ongoing climate destruction.

Big Oil's Deceptive Climate Ads

How four oil majors sold false promises from 2000-2025.

Evidence

Deception Documents

A collection of evidence showing Big Oil knew as early as the 1960s that their products would cause climate change — and has spent decades deceiving the public.

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Climate Files

An annotated archive of internal and hard to find industry documents on climate change policy and science dating back to the 1950s.

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A 2024 joint staff report by the House Committee on Oversight and Accountability & Senate Budget Committee: “Denial, Disinformation, and Doublespeak: Big Oil’s Evolving Efforts to Avoid Accountability for Climate Change."

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