A California mall is evacuated as a 5,000-strong flash-mob of singers organised by a local choral society cause the building to shake.

Mexico disputes El Salvador's allegation that dozens of Central American migrants who had stowed away on a cargo train were kidnapped by gunmen.

A scientific panel has found Canada has "no system" for monitoring how Alberta's oil sands projects may be polluting local waterways.

The UN votes to restore a reference to sexual orientation in a resolution against the unjustified killing of minority groups, after heavy US pressure.

Troubled celebrity Lindsay Lohan is under investigation for alleged battery of a worker at a drug and alcohol rehab clinic, police say.

South Korea unveils its biggest live-fire winter military exercise amid continuing tension and threats of retaliation from the North.

New Zealand's military releases hundreds of documents detailing claims of sightings of unidentified flying objects (UFOs).

Indonesia's Aceh province has made a "remarkable" recovery after the devastating 2004 tsunami but many serious challenges remain, the UN says.