In the United States, these have included extremely heavy rainfall and atmospheric rivers that battered the west of the nation, causing severe flooding.

Of 35 “vital signs” of climate change effects, the report notes that 20 are now “record extremes” and this has been “tragically reflected” in the amount of human suffering across the world, the scientists write.

The section of the United States from Florida to New York and Houston to Chicago could get so hot that humans would not be able to withstand the heat if the planet continues to warm past 3 degrees Celsius above pre-industrial levels, according to the study.

Its author said her findings should serve as an “urgent warning” to people to change their behavior, as a warming ocean surface may be contributing to these strong hurricanes.

“There are lots of small-scale actions people can take to help mitigate climate change, such as using more energy efficient appliances, opting for more sustainable diet choices, and making use of public transportation, if possible,” Ripple said.

“Since this is a systemic, global crisis, we think a top priority for individuals should be voting for, supporting, and holding accountable leaders who are committed to addressing climate change.”

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