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Rare Fossil Appears to Show Mammal Attacking Dinosaur
A mammal attacked a much larger dinosaur — then a volcano froze them both in time.
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An American combat hospital mobilized in Iraq faces a daily drama of wartime treatment.

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Will experimental particle physics confirm the wild predictions of string theory?

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Do miniscule vibrating strands of energy hold the key to a unified theory of physics?

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Combining the laws of the universe in one theory that explains it all is the Holy Grail

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Anorexia, bulimia, and other eating disorders are on the rise. What can be done?

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In Greenland, a deserted B-29 bomber awaits rescue for more than fifty years.