‘Global warming threatens human survival’

A new study has warned that rising temperatures and humidity wrought by global warming could expose hundreds of millions of people worldwide to potentially lethal heat stress by 2060.
The greatest exposure will occur in populous, tropical regions such as India, Southeast Asia, the Middle East, and Africa. But even in the northeastern United States, as many as 30 million people might be exposed at least once a year to heat that could be lethal to children, the elderly, and the sick, according to the new study.
It’s the first study to look at future heat stress on a global basis, says Ethan Coffel, a PhD candidate in atmospheric sciences at Columbia University, who presented the results at  the American Geophysical Union meeting in San Francisco.