Scientists Compete to Design New Nukes
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Solving an Old Math Problem Nets Award, Trouble
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The White House's Cold-War Cleanup Plan
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U.S. Nuclear Weapons More Stable than Expected
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Intricacies of Ancient Lunar-Cycle Machine Revealed
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EPA Expected to Issue Million-Year-Long Regulation
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Los Alamos Lab Adjusts Security After Breach
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Sounding Off on a Tennessee Cave Tale
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Astronauts Will Fix Hubble Telescope
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Exploring Tennessee's Caves for New Species
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FBI: Secret Los Alamos Files Traced to Woman
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Drug Raid Turns Up Classified U.S. Documents
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Nobel Physics Prize Goes to Big-Bang Work
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New Angles Emerge in Anthrax Attacks of 2001
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