CBS News10d
Doomsday clock set at 89 seconds to midnight, closest ever to "global catastrophe"
The decades-old international symbol, described by the University of Chicago-based nonprofit the Bulletin of Atomic Scientists as a metaphor that shows how close the planet is to reaching "human ...
The University of Chicago Chronicle4y
The Doomsday Clock, explained
a group formed by Manhattan Project scientists at the University of Chicago who helped build the atomic bomb but protested using it against people. The time of the clock is currently 89 seconds to ...