"The Bulletin of the Atomic Scientists (BAS) has moved the Doomsday Clock two minutes closer to disaster. It now stands at three minutes before midnight."

"The BAS was created in 1945 by the scientists who had participated in the Manhattan Project, developing the atomic bomb. They came up with the Doomsday Clock in 1947, after the Hiroshima and Nagasaki bombings, to alert the public to the dangers of nuclear proliferation. Midnight represents a global catastrophe."

"Since the clock's creation, it's been adjusted 18 times — sometimes farther from midnight to reflect improvement."