According to a new report, US greenhouse gas emissions fell by 10.3% in 2020, the largest drop in emissions since World War II, as COVID-19 crippled the economy. However, without urgent climate action, it is feared that emissions will bounce back quickly. 

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The authors say, “With coronavirus vaccines now in distribution, we expect economic activity to pick up again in 2021, but without meaningful structural changes in the carbon intensity of the U.S. economy, emissions will likely rise again as well.”