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The number of walruses worldwide is on a downward slide as the polar ice sheet on which the mammal depends for every stage of its life thins.

Amid growing concern over spread of infection, watchdog demands hygiene audits and compliance plans from acute-care facilities

NASA's Phoenix Mars Lander is aiming for a touchdown on Sunday in the unexplored northern regions of Mars.

A photo spread in Sports Illustrated makes no secret of what's under Danica Patrick's race car suit, but it doesn't begin to reveal what's happening beneath the helmet of the 26-year-old IRL IndyCar Series star. Sports psychologists, neurologists and other scientists who study the minds of top race car drivers say it takes a complex combination of intelligence, certain inherited brain chemicals and environmental influences to make a champion.

SYDNEY (Reuters) - For the first time DNA from an extinct species, Australia's marsupial Tasmanian Tiger, has been used to induce a functional response in a living organism, a mouse embryo, Australian and American scientists said on Tuesday.

She sports around in a Lamborghini Gallardo. And yes, she can change a tire. Race car driver Danica Patrick also has a pet peeve about regular drivers.

A survey reveals that a significant minority of US science teachers believe that human beings were created by God within the last 10,000 years

Extinction isn't forever for the wolf-like marsupial that died out 70 years ago ? its DNA has been resurrected inside mice

The mission, designed to test general relativity, came in last in a review of 10 NASA spacecraft

NASA has set May 31 for the next space shuttle launch and said that Russia's investigation into last month's rocky landing of its own spacecraft shouldn't interfere.