When we think of the coming disasters of global warming, rising sea levels, disruptions to agriculture and disappearing species come readily to mind. We don’t necessarily think of the livability of the Earth’s surface. But if global warming continues to worsen — and every indication is that will be so — there will be places on Earth that could become uninhabitable.
Uninhabitable in the literal meaning of human beings not being able to survive there.
Such places could come into existence during this century, and perhaps sooner than even climate scientists currently fear, given that lethal combinations of heat and humidity have started to occur for brief periods of time. We are not talking about thinly populated or uninhabited desert locations. We are talking here of cities where tens and hundreds of thousands of people currently live.
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