November 12, 1969 The US Army admits to the massacre of civilians at My Lai and announces an investigation of Lt. William Calley for the killings at the Vietnamese village on March 16, 1968. The civilians who were killed numbered at least 100.

November 13, 1985 Some 23,000 residents of Armero, Colombia, die when a mudslide, triggered by the Nevado del Ruiz volcano, buries the city under 30 feet of mud.

November 14, 1533 Ecuador is discovere