Doomsday clock = Relógio do Fim do Mundo; Relógio do Juízo Final; Relógio do Apocalipse
The Doomsday Clock is a symbol which represents the likelihood of a man-made global catastrophe. Maintained since 1947 by the members of the Bulletin of the Atomic Scientists' Science and Security Board, the Clock represents an analogy for the threat of global nuclear war. Since 2007, it has also reflected climate change and new developments in the life sciences and technology that could inflict irrevocable harm to humanity.
The Clock represents the hypothetical global catastrophe as "midnight" and The Bulletin's opinion on how close the world is to a global catastrophe as a number of "minutes" to midnight. Its original setting in 1947 was seven minutes to midnight. It has been set backward and forward 22 times since then, the smallest-ever number of minutes to midnight being two (in 1953 and 2018) and the largest seventeen (in 1991). As of January 2018, the Clock is set at two minutes to midnight, due to global threat of nuclear war, the United States not being involved in world leadership roles, and climate change.