Jul 14 2011
Top Predators Preserve Ecosystems
The dwindling of the world's lions, wolves, sharks and other large animals isn't just sad, it's having far-reaching effects on ecosystems.
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Jul 07 2011
Polar Bears Have Irish Lineage
Some 50,000 years ago, modern polar bears split from a population of Irish brown bears.
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May 11 2011
Fatal Black Bear Attacks on the Rise
Since 1960 in North America, more than 50 people were killed by black bears in the wild.
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Apr 26 2011
Cavemen, Cave Bears Battled Over Turf
After prehistoric humans and cave bears competed for the same real estate, the bears were wiped out. But are our ancestors to blame?
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Apr 01 2011
Polar Bear Knut Drowned
Drowning is declared the official cause of death as thousands protest plans to stuff his body.
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Mar 22 2011
Polar Bear, Knut, Had Brain Damage
Knut, the celebrity polar bear who died over the weekend, may have succumbed to a brain disorder.
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Feb 17 2011
Black Bear Hibernation Mystery
Bears can slow their metabolic rates far more than their body temperatures would predict.
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Feb 01 2011
World’s Largest Known Bear Identified
This giant was larger than the average bear, easily dwarfing the polar bear, the largest species living today.
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Dec 16 2010
The Polar Bear’s Last Stand
A final refuge of Arctic summer sea ice may be the last outpost for polar bears. But that doesn't mean they're in the clear.
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Nov 12 2010
The Wet Dog Shake: Physics Revealed
We've all been sprayed by a shaking soaked pooch. Now their technique could be applied to washing machines.
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