
Each degree Celsius of warming will erase 1.2% of the United States GDP, according to Solomon Hsiang, a climate scientist and economist at the University of California, Berkeley, and the co-director of the research group Climate Impact Lab. If U.S. companies do not act now to halt climate emissions, Hsiang predicts a loss of up to 10.5% of annual GDP, which equates to approximately $2.2 trillion per year.