High-tech FBI surveillance aircraft are to aid authorities investigating a possible serial killer on New York's Long Island, police say.

Oscar-winning actress Catherine Zeta Jones receives treatment for bipolar disorder after husband Michael Douglas's battle with throat cancer.

Forensic experts in Mexico discovered more mass graves in the northwest of the country, as the number of bodies found in graves the northeastern state of Tamaulipas rises to 126.

Former US baseball star Barry Bonds is found guilty of obstruction of justice following a trial over whether he lied about having taken steroids.

The exact chemical recipe of stale beer is elucidated, and researchers suggest simple ways to prevent the fresh taste of beer degrading.

Police in Brazil arrest a local lawmaker Rio de Janeiro for allegedly leading a paramilitary group which controlled more than a dozen neighbourhoods of the city.

Police in Swaziland use tear gas and water cannon to disperse protesters calling for elections in Africa's last absolute monarchy.

North Korea confirms that it arrested a US citizen last November, and is preparing to charge him with "committing a crime" against the country.