Life

Grizzly Cat

Cat versus bear cub: sentimental romp, or nature red in tooth and claw? Watching the two tangle playfully in a Russian hunting camp, the line is hard to draw. Video after the jump.

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The Nature of Petroglyphs

The Bradshaw paintings, petroglyphs found on the lands of Australia's Wanjina Wunggurr Wilinggi people, are perhaps 46 to 70,000 years old�yet their colors remain bright, their figures sharply delineated. A new study suggests that the colors remain vivid because they're alive.

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Flocks of Trouble

A mystery deepens as more redwing blackbirds turn up dead in the America South. It's likely not UFOs or secret weapons, but the birds' instinctual flocking behavior, that's to blame.

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