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Story summary
- A study in *Nature* links emissions from 180 fossil fuel and cement companies to 213 intensified heat waves globally from 2000 to 2023.
- About half of the increased heat wave intensity since preindustrial times is due to these companies, with some events nearly impossible without their emissions.
- Major contributors include ExxonMobil, Chevron, and Saudi Aramco, notably affecting the 2021 Pacific Northwest heat dome.
- The study supports legal accountability for climate-related damages and highlights the role of smaller companies in extreme heat events.
- Researchers plan to analyze other extreme weather events, further connecting corporate emissions to climate change.
