Science
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Shuttle astronaut Janice Voss dies of cancer at 55
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Man who warned of Challenger disaster dies at 73
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New Obama plan to help math, science teacher prep
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New map pinpoints Lyme disease risk areas
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NASA says Russian space woes no worry
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Sandia Labs engineers create 'self-guided' bullet
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Where's the snow? Not in Lower 48, but elsewhere
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Scientists puzzled by region outside solar system
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Experts say Gingrich moon base dreams not lunacy
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Russia blames radiation for space probe failure
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