A study tests the idea that large crowds can be counted using data from mobile phone usage and Twitter.

Tourism operators in earthquake-hit Nepal seek guidance from international experts on which areas can be declared safe for trekking and mountaineering.

A genetically engineered version of a virus that normally causes cold sores shows real promise for treating skin cancer, say researchers.

A study of three mice that spent 91 days on the International Space Station finds abnormalities in their skin.

Researchers develop robots that adapt to damage in less than a minute, instead of the many hours needed by traditional self-learning systems.