Choking China: The struggle to clear Beijing's air
As pollution levels return to normal in China's capital after a record-breaking month of smog, what can be done to banish the smog?
New Scientist
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Health clues found in Big Tobacco's files
Secret research by the tobacco industry designed to pump up sales to "social smokers" is being used to plan anti-smoking strategies.
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Poor farmers to guard Earth's crop riches
The Quechua of Peru are among the first recipients of a new global fund for becoming custodians of the world's threatened crops.
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Can smoking ever be made safe?
Regulating cigarettes like drugs will raise the bar on the quality of evidence behind industry claims for 'healthier' cigarettes.
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The case for 'safer' cigarettes
People had better stop smoking
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Hybrid hearts could solve transplant shortage
Stripped-down pig tissue seeded with human cells has the potential to create a virtually limitless supply of human-compatible organs.
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Affairs of the pig-human heart
Many people are alive and well thanks to pig parts, so why not a heart or another organ? (Editorial)
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Earth's protective shield is stealing our air
The magnetosphere, long seen as our benign protector from the sun, may actually be focusing energy into the poles and aiding atmospheric loss.
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Human fishing spree goes back 1000 years
We have been depleting fish stocks not just for decades but for many centuries, according to a new historical survey.
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Rising sea levels: Survival tips from 5000 BC
Underwater archaeology is revealing how ancient civilisations coped with rising seas, and while their methods were basic, they still have relevance today.
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Biofuelling the future
You can't grow biofuel without cutting down trees, right? Not so, says Marcos Buckeridge, who tells Jan Rocha how Brazil can supply the world with green ethanol.