Health
Salt: Killer or scapegoat?
Features
This week's magazine
Editor's picks
Table of contents
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Life
Ravens use gestures to grab each other's attention
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Health
Promising HIV-gel trial halted in Africa
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Life
Da Vinci code for trees provides wind protection
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Space
Dark matter particles may be heavyweights after all
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Life
Turtle eggs communicate to hatch together
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Space
NASA confiscates web-auctioned rocket engine
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New Zealand's invasive ants mysteriously vanish
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Technology
Forget antibiotics, try nanoparticles instead
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60 Seconds
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Earth
Warmer world is the challenge of a generation
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Earth
Earth in balmy 2080
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Muscle-based gene therapy beats HIV
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Space
Airbursts trigger dust avalanches on Mars
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Tilt your head to improve brain signals
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Pigeons are more living helicopters than flying rats
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Health
'Lethal' radiation doses can be treated with drugs
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Health
Cancer cells poisoned with sugar
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Technology
Vital utilities vulnerable to hacking
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Technology
Inside the race to crack the world's hardest puzzle
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Technology
Digital mutiny sinks piracy bill
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Technology
Glasses emit personal sound and smell
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Earth
US plans its first megadam in 40 years
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