"Only dull people are brilliant at breakfast" -Oscar Wilde |
"The liberal soul shall be made fat, and he that watereth, shall be watered also himself." -- Proverbs 11:25 |
Two-thirds of the world’s polar bears will disappear by 2050, even under moderate projections for shrinking summer sea ice caused by greenhouse gases in the atmosphere, government scientists reported on Friday.
The finding is part of a yearlong review of the effects of climate and ice changes on polar bears to help determine whether they should be protected under the Endangered Species Act. Scientists estimate the current polar bear population at 22,000.
The report, which the United States Geological Survey released here, offers stark prospects for polar bears as the world grows warmer.
The scientists concluded that, while the bears were not likely to be driven to extinction, they would be largely relegated to the Arctic archipelago of Canada and spots off the northern Greenland coast, where summer sea ice tends to persist even in warm summers like this one, a shrinking that could be enough to reduce the bear population by two-thirds.
The bears would disappear entirely from Alaska, the study said.
“As the sea ice goes, so goes the polar bear,” said Steven Amstrup, lead biologist for the survey team.
Leaders of some of the world's fastest-growing economies are on track toward a "sensible" international agreement to curb climate change, Australian Prime Minister John Howard announced Saturday.
But the hard-won consensus at the Asia-Pacific Economic Co-operation forum includes no targets for emissions reductions and oceans of wiggle room even within the non-binding APEC communique.
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"We agree to work to achieve a common understanding on a long-term aspirational global emissions reduction goal," says the text, "to pave the way for an effective post-2012 international arrangement."
APEC members also agreed to reduce "energy intensity" - the amount of energy needed to produce a unit of economic growth - 25 per cent by 2030.
That non-binding, one-per-cent annual reduction doesn't translate into real cuts in emissions, but could slow the rate of increase.
Labels: global warming, polar bears