Researchers' efforts to clone the vanished Tasmanian tiger highlight the quandary of reviving long-gone creatures
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It took Margaret Mead to understand the two nations separated by a common language
Scientists knew that alligators' jaws are covered in bumps but it took biologist Daphne Soares to figure out why
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Only hundreds of miles from the North Pole, industrial chemicals threaten the Arctic's greatest predator
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Scientists zero in on the caring and cunning ways of a seldom-seen waterbird
Fifty years after the discovery of DNA's structure, the payoff hasn't matched the hype. But really, we've only just begun
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Going the extra mile for bears and bats
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In the former Soviet Union, "rad rangers" are racing to find lost radiation devices before terrorists can turn them into "dirty bombs"
Alaska's husband-and-wife team of avalanche experts work to save lives all winter, then take to their kayaks in summer
Las Vegas showman Jonathan Kraft went from riches to rags to turn a patch of Arizona desert into a refuge for abused and abandoned exotic animals
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The world's largest (maybe) 9-planet solar system model goes up along Route 1 in northern Maine
The 5,000-plus-year-old Neolithic man discovered a decade ago is telling scientists how he lived and died
An international campaign to rid the world of polio has made dazzling progress. But some experts question whether the scourge can ever be eradicated
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Angry fishermen accuse the cormorant of ruining their livelihood and have taken the law into their own hands. But is the cormorant to blame?
When a million-ton iceberg threatens your $5 billion oil platform, who you gonna call? Jerome Baker
Scientists launch a $1 billion effort to track marine life worldwide
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Is it the fresh air, the seafood, or genes? Why do so many hardy 100-year-olds live in yes, Nova Scotia?
In a case that could reveal the villain behind the Irish Potato Famine, the gumshoe is a plant scientist
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