Most of India's 2.8 million prostitutes own cellphones – making it easier to contact them about HIV tests.

http://www.newscientist.com/article/mg21028095.100-cellphones-get-help-t...

Conservationists and agriculturalists must harness new, integrated approaches to achieve biodiversity and agricultural goals, argues Achim Steiner, executive director of the UN Environment Programme.

http://www.newscientist.com/article/mg21028085.100-conservation-and-farm...

June marks 30 years since the first report of AIDS - a syndrome that has killed an estimated 25 million people worldwide. Yet this year's anniversary is somewhat arbitrary: the virus responsible for AIDS has probably been circulating within human populations for 100 years. Why did it take so long to detect it?

Carbon dioxide has pillaged the Great Barrier Reef of a compound that corals and many sea creatures need to grow. The finding, from the first survey of ocean acidification around one of the world's greatest natural landmarks, supports fears that the ecosystem is on its last legs.

After years of frustration, polio is on the ropes. But we could still miss the historic opportunity to wipe it out for good.

Whether Antarctica's ice will survive a warmer world is one of the great puzzles of climate science.

Far from ravaging threatened ecosystems, non-native species could be powerful allies in the fight to save them.

Far from ravaging threatened ecosystems, non-native species could be powerful allies in the fight to save them.

As the cloud of orbiting junk shrouding the Earth grows ever denser, the most sophisticated garbage collectors of all time are taking shape.

As well is supporting a million local people the inner Niger delta is home to a wealth of wildlife – including many of Europe's migratory birds.