U.S. on Pace for Record Tornado Season

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Trees Do Their Best Work with Thermostats at 70

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NASA Downplayed Climate Studies, Monitor Says

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Astronomers Capture Star Exploding

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Low-Oxygen Zones Spreading to Deep Ocean

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Messing with the Climate to Save It

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Good Signs from Greenland's Ice Sheet

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Bush Announces National Goals on Emissions

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A Climate 'Policy Wonk' in the Making

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The Mystery of Global Warming's Missing Heat

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Greenhouse Gas Emissions Rise in China

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Study: Sea Levels May Rise Faster Than Projected

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Outlook for Oceans Bleak as Sea 'Deserts' Grow

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