A new report by the National Climate Assessment says warming-charged extremes “have already become more frequent, intense, widespread or of long duration.” The report notes the last few years have smashed U.S. records for damaging weather, costing nearly $400 billion since 2015.

Climate change will wreak havoc on the natural environment, economy and public health in the United States unless more is done to drastically reduce carbon emissions, a US government report has warned.

"Without substantial and sustained global mitigation and regional adaptation efforts, climate change is expected to cause growing losses to American infrastructure and property and impede the rate of economic growth over this century."

The report is mandated by Congress and includes assessments by 13 federal agencies. It details how rising temperatures threaten to lower agricultural yields, increase the likelihood of flooding and wildfires, impede energy production and increase the prevalence of tropical diseases across the country.