A Japanese stem cell scientist at the heart of a scandal over false claims and fabricated research has resigned.

North Korea urges a joint inquiry with the US into a cyber-attack on Sony that led to the studio cancelling the release of the film The Interview.

Alex Salmond calls for England to hold a "peasants' revolt type referendum" on its own constitutional future.

A 28-year-old man is detained on suspicion of the murder of an off-duty PC who died after being attacked in Liverpool city centre.

Charities warn patients are not being taught how to use potentially life-saving asthma inhalers and allergy auto-injectors correctly.

Colombia's Farc rebels have killed five soldiers in an ambush, the army says, hours before they are due to start an indefinite, unilateral ceasefire.

Voters in Liberia are set to go to the polls in an election that was postponed because of the Ebola outbreak, with ex-footballer George Weah facing the president's son.

Aerial photographs from the 1940s and 1950s are being used to probe the climate history of the Antarctic Peninsula.