'Your papers, please' must never be heard in America
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In a critical climate indicator showing an ever warming world, the amount of ice in the Arctic Ocean shrank to an all-time low this year, obliterating old records.
Arctic sea ice melted this summer to the second lowest level since record-keeping began more than 50 years ago, scientists reported Thursday, mostly blaming global warming.
Two groups of scientists are suggesting a sliver of hope for the future of polar bears in a warming world.
Sea ice reflects more than 90 percent of the sun's heat off the Earth, but when it is replaced by the darker open ocean, more than half of the heat is absorbed into the water, Meier said.
The ice in the Arctic "essentially acts like an air conditioner by keeping things cooler," Meier said.