Unbearable heat could displace millions

Air humidity is an important measure of how heat affects the body, and to measure the latter, we use the special wet-bulb temperature. A wet-bulb temperature of 35+ degrees is lethal. Scientists from the University of New South Wales have created a map that shows the world’s wet-bulb temperatures, should temperatures increase by 10 degrees. The light colours indicate the regions in which life would be unbearable.