Physicists Decry Bush's Mars Mission Plan

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NASA Scramjet Sets a New Air-Speed Record

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WHO Clarifies Smallpox Recommendation

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WHO Allows Smallpox Research

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Nuclear Plants Get Stricter Security Standards

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Cassini Sends Home Shots of Saturn's Moon

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Report Adds to Confusion over Gulf War Syndrome

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Two Israelis, American Share Nobel Chemistry Prize

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Three Americans Win Nobel Physics Prize

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Civilian Team's Second Space Trip Wins X Prize

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SpaceShipOne Takes X-Prize

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Drug Could Help Fight Radiation Sickness

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One Man's Junk Is Another's Marvel

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Detecting the Earth's Hum for What It Is

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