The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to Washington, DC, bears the hallmarks of human-caused global warming.

Human-caused climate change is causing heat waves to be more frequent, intense and long-lasting. Europe is the fastest-warming continent, and is warming at twice the rate of the rest of the world.

The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to Washington, DC, bears the hallmarks of human-caused global warming.