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A heat-resistant worm that can live miles beneath the Earth's surface

Until recently, most scientists believed that only single-celled creatures were capable of enduring life in the hot, high-pressure zone beneath Earth's crust. Now they've discovered tiny worms (pictured above) who live as many as 2.2 miles below ground. What else will we find living deep inside the Earth? » 6/03/11 4:40pm 6/03/11 4:40pm

Meet the Tardigrades: The Solar System's Most Extreme Survivors

There is an organism living on this planet who can travel through space without a suit. Cute, unassuming little invertebrates, these organisms are called tardigrades, or water bears, and usually spend their days crawling around on a piece of nice wet moss in a forest, or meandering through our vast oceans. They only… » 7/10/08 9:41am 7/10/08 9:41am