Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can keep time so precisely they barely lose a beat over the age of the universe.

The Chicago Bears were headed to the locker room, and the Detroit Lions waved them back onto the field. The Lions benefitted from a 10-second clock runoff late in the first half of Sunday's home ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Scientists have taken a major step toward the ambitious global goal ...

The Bulletin of the Atomic Scientists shifted the hands of the symbolic clock to 89 seconds to midnight, citing the threat of climate change, nuclear war and the misuse of artificial intelligence. By ...

Time appeared to skip a beat last week when some of the world’s most accurate clocks were affected by a wind-induced power ...