Half of Britons deny climate change man-made: poll

Almost half of Britons do not believe human behaviour is the main cause of global warming, a new poll showed Sunday, a day before world leaders begin crunch climate talks in Copenhagen.

Elephant tooth evolution rooted in grass

Once they developed a taste for grass, the ancestors of today's elephants swiftly broadened their leaf-only diet and placed their progeny on a new evolutionary track, a study said Wednesday.

The secret life of squirrels in New York City

A recent study has found eastern grey squirrels thrive in New York City's urban environment by adapting their behaviour according to cues from human pedestrians, and mostly by ignoring passers-by.

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