Doomsday Clock: Earth is ‘3 minutes’ to catastrophe

Climate change and nuclear threats prompt the keepers of the Doomsday Clock to move it "two minutes" closer to the end of time.

Created in 1947 by the Chicago-based Bulletin of the Atomic Scientists as a symbolic countdown to global catastrophe, the Doomsday Clock had its first shift in three years on Jan 22. It now stands at three minutes to "midnight", or doomsday.