It made headlines recently when the Doomsday Clock was shifted from three minutes to midnight to a new setting of two and a half minutes to midnight.
That is the nearest the clock has been to midnight for more than fifty years. The body responsible for the clock said
the probability of global catastrophe is very high, and the actions needed to reduce the risks of disaster must be taken very soon.
It should be an urgent warning to world leaders.
The idea of a Doomsday Clock was conceived by the editorial staff of the Bulletin of Atomic
