A disaster is defined as a sudden event that causes damage exceeding a community's ability to cope. Though often natural, disasters can be human-caused. Man-made disasters result from human intent, negligence or error, and include nuclear accidents, chemical spills, radiological emergencies, and acts of terrorism. Examples of man-made disasters include the London smog, Al-Mishraq fire, Chernobyl explosion, Kuwait oil fires, and destruction of the Aral Sea. Disasters have significant negative effects such as loss of life and property, threats to wildlife, ruined farmland, health issues, and more.