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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Shellfish reefs 'more imperilled than coral'
Reefs built in cooler waters by oysters and other shellfish are the world's most imperilled marine habitats, according to a report.
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The man who discovered greenhouse gases
People were debating the greenhouse effect 150 years ago
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Invest in islands to save most species
Islands are about nine times as valuable for biodiversity as an equally large piece of mainland, says a worldwide analysis.
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Swine flu vaccine won't be ready for next wave
The vaccine industry is waiting for a WHO decision on whether to keep making regular flu vaccine, or whether to switch to vaccines for the current swine flu outbreak.
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Birds swell the ranks of critically endangered species
191 bird species have been added to the IUCN red list, the roster of the world's most threatened species
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Paradise lost: Islanders prepare for the flood
Are the Maldives doomed to disappear beneath the waves, or can a last ditch effort hold back rising sea levels?
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Brazil's other big forest in dire straits
Often obscured by the glare of publicity that surrounds the Amazon rainforest, the Atlantic forest is a biodiversity hotspot
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Katrina floods 'were government's fault'
Floods in New Orleans following hurricane Katrina were made worse by a channel dug by a US government agency, according to testimony heard by a federal court. The hearing, in which the government is being sued for allowing the channel to be built, could lead to payouts to hundreds of thousands of flood victims. It may also lead to massive reforms in flood protection.
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Swine flu: Can science save us from the second wave?
The flu outbreak may be winding down in Mexico and causing fewer deaths than feared, but health officials now fear that a more virulent version will return to kill millions.
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Still wide open to killer flu
In the spring of 1918, North Americans were complaining about an unseasonable flu that was sweeping through several cities. They and the rest of the world were still blissfully unaware of what was in store for later that year: a pandemic that would kill 50 million people, or by some estimates many more - certainly more than the Great War that was still raging.