The world is closer to annihilation than it has ever been since the first nuclear bombs were released at the close of World War II, The Bulletin of the Atomic Scientists said Tuesday. The time on the ...

Add Yahoo as a preferred source to see more of our stories on Google. The Bulletin of the Atomic Scientists members, from left, Jon B. Wolfsthal, Asha M. George and Steve Fetter reveal the Doomsday ...

Earth’s changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...

Time zones are a complicated but necessary evil. Humans like the numbers on the clock to vaguely match up with what the sun is doing in the sky outside. To that end, different places in the world keep ...

Custodian Ray Keen inspects a clock face. A new study says world clocks will need a "negative leap second" to stay accurate. (Charlie Riedel/AP) ...

Earth is closer than ever to global catastrophe as major world powers grow increasingly confrontational and cooperative efforts to reduce existential risks break down, a group of scientists warned ...