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Drink two espressos to enhance long-term memory
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food science
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High-fibre diet may protect against allergic asthma
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Space
Breaking relativity: Celestial signals defy Einstein
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Life
We want to know meat's origin – but not if it costs
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Physics
2013 review: Top ten breakthroughs in physical science
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51¶¯Âþ 2013 holiday quiz
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Technology
Wired Wild West: Cowpokes chatted on fence-wire phones
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