A new study shows that planetary systems can form and survive in the chaotic environment around pairs of stars.

A koala who experts think felt trapped on a tidal bank swims out to a group of canoeists and hitches a ride on Australia's Gold Coast.

Tuning a piano also tunes the brain, say UK researchers who have seen structural changes to brain areas that deal with memory and navigation.

Irish astronomer Dave Grennan describes how he discovered his second exploding star in two years.

A traffic-light blood test that gives an amber or red warning result if there are signs of liver damage can help spot hidden alcohol harms, say experts.

Astronomers spot the first visible-light evidence for gravitational waves - ripples in space-time predicted by Einstein that have never been directly seen.

Australia plans to link its carbon trading scheme with Europe's, enabling Australian firms to use EU permits to emit CO2 from mid-2015.

Chimpanzee grooming habits are influenced more by where they live than by genetic or ecological influences, according to research published in Proceedings of the Royal Society B.