A planet orbiting two suns - the first confirmed alien world of its kind, and evoking Tatooine in the film Star Wars - is discovered by Nasa.

Satellite data mark the annual minimum of Arctic ice cover, and scientists say it is the second-lowest ever recorded.

Artificial blood vessels made on a 3D printer may soon be used for organ transplants of lab-created organs.

A Plymouth University scientist begins his two day challenge in an airtight chamber at Cornwall's Eden Project surviving on oxygen produced solely by plants.

Scientists develop a wound dressing which glows pink to indicate harmful levels of bacteria.

The coldest summer for 18 years is blamed by conservationists for affecting UK butterfly and moth numbers.

UK greenhouse gas emissions will not fall quickly enough to meet national "carbon budgets", according to an analysis.

Ancient humans interbred with their ancestors in Africa until relatively recently, suggests a new analysis.