More from Katharine Davis
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Stem cells mend hearts at a distance
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Science of cell protein destruction wins Nobel
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Technology
Clean green cars move one step closer
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Humans
Lice may reveal early human interaction
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Photosynthesis got a really early start
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How fish keep one step ahead of ice
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Arthritis drug withdrawn over heart fears
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Horrific death toll in Darfur revealed
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Women on fast-track to outrun men
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IBM claims supercomputer speed crown
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Buckyballs made safer for humans
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Enough wind to power the world
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