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The race is on for cars that drive themselves
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Rare jaguar sightings have sparked a debate about how to ensure the cats’ survival in the American West
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A new study spotlights the plight of the polar bear, but there’s still time to help the beloved creature
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Life as We Know It
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In Poland’s primeval forest, a Nazi scientist re-created an extinct breed of horse. Or did he?
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Why the biofuels movement could run out of gas
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