Christopher Callahan

Earth systems scientist and assistant professor, Indiana University O'Neill School of Public and Environmental Affairs

Appears in 1 story

Last updated Sep 4, 2026

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New study traces specific disasters to individual fossil fuel companies' emissions

New Capabilities

As of September 2026: Author of the Earth's Future source attribution study

Scientists have tied extreme weather to climate change for two decades. A new peer-reviewed method goes further: it names the company, the disaster, and the percentage.

Updated Sep 4