The task is complicated by the fact that there isn't one monolithic polar bear population.
What the Chinese were thinking when they deliberately destroyed one of their polar orbiting satellites in 2007 with a missile is anyone's guess.
He said it could take up to 35 days and was "one of the great polar challenges".
The Polar Plateau is one of the most inhospitable places on Earth.
"Polar bears are one of the biggest conservation success stories in the world, " says Drikus Gissing, wildlife director for the Canadian territory of Nunavut.
But after months of reporting and hundreds of bear sightings, I kept running up against an inconvenient truth: There were a lot of well-meaning, well-credentialed scientists, wildlife officers and local experts who simply didn't believe that polar bears were one ice cube away from extinction.
Polar filed countersuits, one for hoarding and one accusing Cisneros Group of airing the accusations on its TV network to defame it.
Whereas the West's celebrity icons line up to get their pictures taken next to posters of polar bears, no one stands with the Iranian people.
No one knows what went wrong with Mars Polar Lander and scientists still hope for a miracle.
Growth of phytoplankton in certain areas is usually limited by lack of iron in the water, and the sub polar Atlantic is believed to be one of these areas.
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The parents of a schoolboy injured in an attack by a polar bear in the Arctic which left one other pupil dead, are at his hospital bedside.
But if their protagonists are polar opposites, both stories -- one as told in Aravind Adiga's best-selling novel "The White Tiger, " the other in "Slumdog Millionaire, " the new movie from "Trainspotting" director Danny Boyle -- have much in common.
It is tempting to think of these as polar opposites: the more you have of one the less you have of another.
The 44-metre PSLV rocket hurled into polar orbit TES and two tiny satellites, one from European Space Agency and the other from Germany.
One result was that an unlaunched craft similar to Mars Polar Lander was tucked away in a clean room while the agency had a rethink.
One winter day in northern Quebec some years ago, a polar bear wandered into a village and approached a seven-year-old Inuit child.
High integrity on one hand, and high margins on the other, were the polar opposites I had attempted to marry.
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Coke says it will distribute more than one billion white cans and roughly the same number of seasonal red cans, which also include polar-bear images.
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Deep inside the Arctic Circle, far closer to the North Pole than to Oslo, Svalbard is at once one of Europe's last intact wilderness areas and the world's most accessible slice of the polar North.
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