'Extreme Heat' Days Triple Since 1980s, and More Are Coming
By the researchers' estimates, 1.7 billion urban dwellers -- or almost one-fifth of the planet -- were exposed to a rising number of extreme heat days between 1983 and 2016.
By the researchers' estimates, 1.7 billion urban dwellers -- or almost one-fifth of the planet -- were exposed to a rising number of extreme heat days between 1983 and 2016.