The Cassini probe in orbit around Saturn is going to picture the ringed planet in a special photo that also includes a distant Earth.

The quality of a performance does not drive the amount of applause an audience gives, a study suggests.

A hairy crab named after US actor David Hasselhoff hitched a ride on an ocean "super-highway" to colonise deep sea vents in the Atlantic.

High levels of a toxic radioactive isotope, strontium-90, have been found in groundwater at Japan's Fukushima nuclear plant, its operator says.