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Kenneth J. Davis, The Conversation

Kenneth J. Davis is a professor of Atmospheric and Climate Science at Penn State. He studies the earth’s climate system, in particular the terrestrial carbon and water cycles. His research is motivated by the need to understand how humans are changing the climate via emissions of greenhouse gases and how we can best manage and minimize climate change and its impacts.

Where U.S. emissions come from, in charts

It mostly comes down to vehicle, energy, and industry