Each year for the past 78 years, the Bulletin of the Atomic Scientists has published a new Doomsday Clock, suggesting just how close – or far – humanity is to destroying itself. The next edition of ...

This article was updated at 2:07 p.m. Eastern Time. In a sign of pessimism about humanity's future, scientists today set the hands of the infamous "Doomsday Clock" forward one minute from two years ...