global warming is not a myth

Scientists Warn of Melting Ice in Arctic
ANCHORAGE, Alaska - Scientists on Monday painted a gloomy picture of the effects of global warming on the Arctic, warning of melting ocean ice, rising oceans, thawed permafrost and forests susceptible to bugs and fire.

"A lot of the stories you read make it sound like there's uncertainty," said Jonathan Overpeck, a professor of geosciences at the University of Arizona. "There's not uncertainty."
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Overpeck reviewed NASA studies showing how Arctic ice has shrunk in size and depth. Climate models 25 years ago predicted a shrinking ice pack.

"What we didn't predict is that it would be so dramatic," Overpeck said.

Scientists predict the summertime Arctic could be ice free before the end of the century, opening up northern sea routes but threatening the existence of polar bears, a marine mammal that depends on sea ice to live.
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If warming trends continue, Overpeck said, the globe eventually will get a nasty message from the Arctic: a rise in sea levels. Higher oceans will flow into low-lying parts of the world such as New Orleans, making recovery in that hurricane-ravaged city moot.

"It's hard to imagine why we're wanting to rebuild if we're going to allow global warming," Overpeck said.

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