The world is as close to ultimate doom as it has ever been, group says. — -- The world is as close to apocalyptic destruction as it has ever been in the 71-year history of the symbolic "Doomsday ...

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.

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 ...

How some of the world’s most precise clocks missed a very small beat. By Mike Ives and Adeel Hassan Time appeared to skip a beat last week when some of the world’s most accurate clocks were affected ...