WASHINGTON — Atomic scientists set their "Doomsday Clock" on Tuesday closer than ever to midnight, citing aggressive behavior by nuclear powers Russia, China and the United States, fraying nuclear ...

On a campus in Boulder, Colorado, time just became a little more exact. Inside the National Institute of Standards and Technology, or NIST, a new atomic clock named NIST-F4 has begun to tick — not ...

CHICAGO -- At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, ...

Earlier on Jan. 26, the hands of the Doomsday Clock were set closer to midnight than they've ever been in its history. Citing a worldwide "failure of leadership," the Bulletin of the Atomic Scientists ...

The Bulletin of the Atomic Scientists set the Doomsday Clock to 89 seconds to midnight, one second more than the last two years, attributed to threats posed by climate change and artificial ...

Time is almost up on the way we track each second of the day, with optical atomic clocks set to redefine the way the world measures one second in the near future. Researchers from Adelaide University ...

A portable atomic clock that has been successfully tested at sea could change the future of marine navigation.