DOE Targets Unsecured Uranium

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Nuclear Waste Clean-Up Plans Fuel Debate

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U.S. Eyes Security Reforms for Nuclear Sites

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Energy Department Seeks to Avert Nuclear Plant Break-Ins

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Report Questions Nation's Nuclear Plant Security

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Gravity Probe B to Test Einstein's Theory

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NASA Set to Test Einstein's Relativity Theory

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Missile-Shield Plan Goes Ahead

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Protecting the Nation's Nuclear Materials, Part 3

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Protecting the Nation's Nuclear Materials

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NASA to Test 'Scramjet' Aircraft

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Critics Doubt NASA's Hubble Plans

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