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USA Today's Doyle Rice almost always is on top of the latest hypothetical global warming scare study, and a couple of days ago he noticed a doozy.

By on 5.12.10 | 1:40PM

USA Today's Doyle Rice almost always is on top of the latest hypothetical global warming scare study, and a couple of days ago he noticed a doozy:

Hot enough for you?

A worst-case scenario of global warming, in which temperatures would soar some 21 degrees, is that much of the world may simply become too hot for humans to live in, according to new research published last week in the Proceedings of the National Academy of Sciences.

"We found that … a 21-degree warming would put half of the world's population in an uninhabitable environment," says study co-author Matthew Huber of Purdue University.

While the Intergovernmental Panel on Climate Change found that the result of business-as-usual warming would be 7 degrees by 2100, eventual warming over several centuries of 25 degrees is feasible, says Huber.

Next on Rice's radar: "What if Superman grew up in Germany instead of America?"

and:

"What if Napoleon had a B-52 at the Battle of Waterloo?"

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