The answer depends on what you mean by “modern”, it turns out you only have to go back about three centuries to find there was no reliable way. The technology that changed that was a clock ...

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 ...

Scientists and global leaders revealed on Tuesday that the "Doomsday Clock" has been reset to the ... "Meanwhile, arms control treaties are in tatters and there are active conflicts involving ...