The main leftist rebel group in Colombia, the Farc, announces a definitive ceasefire from midnight, ending one of the world's longest insurgencies.

A team of six people complete a Nasa-funded Mars simulation in Hawaii, after living in a dome in near isolation for a year.

A test that can detect the stickiness of a key protein molecule could help diagnose the early stages of Parkinson's disease, a study from the University of Edinburgh suggests.

A 62-year-old man is arrested after allegedly filling a lubricant dispenser with hydrochloric acid at a gay club in Sydney.

The Mexican singer Juan Gabriel dies of a heart attack at his home in California, days after performing at a concert in Los Angeles.

Royal Navy warship HMS Daring is to be sent to the Gulf to support US carriers that are launching bombing raids on militants from the Islamic State group.

The president of the French region that includes Calais port suggests that those seeking asylum in the UK should be able to lodge their claim in France.

The health of patients is being put at risk because GPs are being forced to carry out complex consultations in 10 minutes or less, doctors are warning.