New research says that black carbon, or soot, is making a much larger contribution to global warming than previously recognised.

The US space agency says it is now ready for its Curiosity rover to start drilling on Mars, and has identified a patch of ground where this is likely to happen.

The mother of a British boy shot in the Newtown school massacre weeps as she recalls learning of his death, as his father calls for greater US gun controls.

Japan's two main airlines ground their Boeing 787 Dreamliners after one was forced to make an emergency landing because of battery problems.

A group of Conservative backbench MPs is to publish a report later calling for a substantial return of powers to the UK from the European Union.

Taxpayers risk "substantial losses" as a consequence of coalition policy on funding new infrastructure, the National Audit Office warns.

A former minister is calling for unlimited fines and criminal sanctions for companies who own care homes in England where abuse is carried out.

Health Secretary Jeremy Hunt wants the NHS to be paperless by 2018 - a move a reports says could help save the health service £4bn a year.