Researchers propose a method to detect the light emitted near spinning black holes, suggesting that the twisting of space-time twists the light itself.

Adult prairie dogs kiss more when people are watching, say researchers studying the effects of captivity on animal behaviour.

The crew of a simulated mission to the Red Planet walk across a sandpit, pretending they are on the surface of Mars.

Nasa's Stardust spacecraft is about to sweep past Comet Tempel 1, to see how much it has changed since a probe last visited the object in 2005.

Zookeepers at London Zoo capture the first moment when a three-month-old gorilla leaves his mother's side.

Colombia has announced it is to promote trade with Asia by building an alternative to the Panama Canal with China.

Scientists say they have uncovered why the bright yellows in some of Vincent Van Gogh's paintings have been turning brown.