Research has estimated that 111 of the world's largest fossil fuel companies have caused $28 trillion in heat-related climate damages so far—slightly less than the value of all goods and services produced in the United States last year.

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3. Research has estimated that 111 of the world's largest fossil fuel companies have caused $28 trillion in heat-related climate damages so far—slightly less than the value of all goods and services produced in the United States last year.