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The world's biggest companies have caused $28 trillion in climate damage, a new study estimates

  • A Dartmouth College research team estimated that pollution from 111 major companies, primarily fossil fuel producers, contributed to approximately $28 trillion in economic losses related to climate change impacts between 1991 and 2020.
  • This study emerged amid past difficulties calculating individual companies’ damages, which were previously lost in data noise, making accountability unclear.
  • The research linked corporate emissions to heat damage alone, excluding costs from other extreme weather like hurricanes and droughts, using robust scientific methods.
  • Lead author Christopher Callahan highlighted the common inquiry about determining responsibility for climate impacts, while co-author Justin Mankin emphasized that scientifically, denial of such accountability is no longer viable.
  • Although no major climate liability lawsuits have succeeded, clearer scientific links in this study could improve legal accountability and support stronger climate actions.
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The Daily ProgressThe Daily Progress
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Companies linked to $28T in climate damage

WASHINGTON — The world's biggest corporations have caused $28 trillion in climate damage, a new study estimates as part of an effort to make it easier for people and governments to hold companies financially accountable, like the tobacco giants have…

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  • 53% of the sources are Center
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Carbon Copy broke the news in on Wednesday, April 23, 2025.
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