Scientists show off a tiny laser with a single, living cell at its heart in an advance that may lead to better microscopic imaging.

Amazon tree-frog biodiversity established over tens of millions of years, suggesting damage to the rainforest could take a similar time to recover.

Italians are voting in four referenda, including on whether to resume nuclear power.

The death toll reaches 35 in Germany's E. coli epidemic and about 100 patients will need kidney transplants or life-long dialysis.

Bangladesh is to set up a special force to save the critically endangered Royal Bengal Tiger and other animals, officials say.

A series of earthquakes hits the New Zealand city of Christchurch, leaving thousands without power, months after a tremor devastated the city.

As the American-led Dawn mission edges ever closer to Asteroid Vesta, the spacecraft's camera system starts to discern features on the great rock's surface.