These cities will be too hot for the Olympics by 2050

Most of the world’s cities will be unable to host the Games in the coming decades’ summer months, in the coming decades, as they blow past the threshold of safe humid heat.

​ Most of the world’s cities will be unable to host the Games in the coming decades’ summer months, in the coming decades, as they blow past the threshold of safe humid heat. Read More Breaking News, Latest News and Videos | CNN