Scientists hopeful despite climate signs
By SETH BORENSTEIN, AP Science Writer
WASHINGTON - Climate scientist Michael Mann runs down the list of bad global warming news: The world is spewing greenhouse gases at a faster rate. Summer Arctic sea ice is at record lows. The ice sheets in Greenland and West Antarctica are melting quicker than expected.
Is he the doomsayer global warming skeptics have called him?
Mann laughs. This Penn State University professor — and many other climate scientists — are sunny optimists. Hope blooms in the hottest of greenhouses.
Climate scientists say mankind is on the path for soaring temperatures that will melt polar ice sheets, raise seas to dangerous levels, and trigger mass extinctions.
But they say the most catastrophic of consequences can and will be avoided.
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NASA's James Hansen, who forecasts some of the bleakest outlooks on global warming, said in an e-mail: "I am always surprised when people get depressed rather than energized to do something.
It's not too late to stabilize climate."
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The scientists say the public now understands how bad the problem is. So these researchers have faith that society will rally in time....
How about Al Gore? Does he lose hope?
"No, because we can't afford to," said the former vice president, who has helped bring global warming to center stage. "It's a genuine planetary emergency."
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