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Technology
Biodefence special: Fortress America?
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Afghanistan’s health gains at risk as fighting returns
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Powerful drug comes with an ‘off switch’
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Body reveals its inflammation ‘off switch’
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Blindness prevention drug may make matters worse
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If it stops plague, will it stop hospital superbugs?
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Earth
Rich nations put something rotten in Africa
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Toxic waste mystery in Ivory Coast deepens
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Flu’s killer tactic puts families at risk
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Live bird flu vaccine raises hope of pre-pandemic shots
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Cystic fibrosis gene protects against tuberculosis
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Chinese bird flu vaccine shows best results yet
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