Orangutans choose the best building materials to engineer the most structurally sound and comfortable nests, according to researchers.

Allegations that US Secret Service agents consorted with prostitutes in Colombia have "let the boss down", says the US military's top officer.

A young female journalist who reported on allegations of sexual abuse by a former football coach is among the winners of a Pulitzer Prize.

Human rights are still being violated in Bahrain despite promises of reform, according to the campaign group Amnesty International.

Millions more children are surviving beyond their fifth birthday than they were in 1990, thanks to international aid, says a Save the Children and Unicef report.

Fatigue led a pilot to mistake the planet Venus for another plane and send his airliner into a dive, injuring 16 people last year, investigators say.

Anders Behring Breivik, accused of killing 77 people in Norway last July, is due to read out a prepared statement on the second day of his trial in Oslo.

A group of Peruvian gas workers abducted six days ago by rebels has been freed after a military operation, the Peruvian government says.