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Pentagon changes tack too late to save GPS
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Mad cow test could avert slaughter
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Tobacco giant ‘knew nicotine was addictive’
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Back to basics for AIDS research
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Technology
Pure buckyballs at bargain prices
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Technology
Ceramic takes the heat for clean fuel
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Net porn law faces `free speech’ test
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Technology
Tougher materials mimic shellfish secrets
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Private agencies could speed drug approval
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Robotic insects tread where humans fear to go
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West bows to psychology’s cultural revolution
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Seizures may have triggered murders
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