Doomsday Clock set to 100 seconds from midnight

The Doomsday Clock was set Thursday to 100 seconds from midnight — the closest it has ever been to mankind's metaphorical destruction since its creation in 1947 — due to the growing threat of climate change and looming threat of nuclear war, according to the Bulletin of the Atomic Scientists' Science and Security Board.

What they're saying: The board shifted the clock ahead 20 seconds — its first change in seconds, instead of minutes — "to underscore the need for action." Its executive chairman, former California Gov. Jerry Brown, said,...