The discovery of well-preserved woolly mammoth remains in eastern Siberia has raised distant hopes that the animal could be cloned, say scientists.

The Mount Everest region's Sherpas express anger at the way studies of glacial lakes have been conducted in recent years - and threaten to halt them.

Libya's national assembly elects engineer Mustafa Abu Shagur as the country's next prime minister, after a close vote against Mahmoud Jibril.

The number of children dying before the age of five falls significantly, says Unicef, crediting targeted aid as well as countries getting richer.

Australian police say they have arrested a man on suspicion of terrorism-related offences following raids in six Melbourne suburbs.

Research shows that a message to Facebook users showing which of their friends voted in a 2010 US election drove 340,000 more people to the polls.

Washington is investigating whether the attack that killed the US ambassador in Libya was planned by militants, officials say.

Mexico says it has arrested Jorge Eduardo Costilla - the second suspected leader of the Gulf drug cartel captured in as many weeks.