Wildlife officials express concern as white-nose syndrome, which has killed millions of bats in eastern US, is detected on the country's west coast.

Hundreds of the most common bird species in Europe and the US are having their populations altered by climate change, according to scientists.

Perfectly backlit by our star, Comet 67P was photographed in dramatic fashion this week by the Rosetta spacecraft - 260 million km from Earth.

Scientists create artificial skin, made from mouse stem cells, that integrates successfully and even sprouts hairs when transplanted into another mouse.