More from Jeff Hecht
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Missile shield faces deadline threat
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Radio waves could zap stormy space weather
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Looters riddle ancient Iraqi sites with holes
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Foam test cracks shuttle heat shield
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Ballistic foam test supports wing damage theory in Columbia inquiry
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Foam impact tests gash shuttle wing
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People and chimps belong together on the family tree
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Quake protection comes at a cost
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Shuttle redesign planned to prevent repeat of Columbia
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Chimps are human, gene study implies
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Is shuttle heading for the scrap heap?
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Oldest known Chinese script discovered
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