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Briefing: New ways to diagnose Alzheimer’s earlier
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Environment
Virgin birth: sharks’ secret survival trick
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Environment
A killer in the bat cave
Features
Humans
Trust firstborns to show their selfish side
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Earth
News review 2008: The year in science
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Drug trial debacle leaves victims facing cancer
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Flu pandemic could cost billions
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There’s more than one bird flu, experts warn
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One drug trial, six men, disaster聟
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Catastrophic immune response may have caused drug trial horror
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Low-fat diet may not reduce cancer and heart risks
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Earth
2005 was the warmest year on record
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