Resembling a squat, wide fridge, the world's most accurate clock went on sale for $3.3 million in Japan on Wednesday. The "Aether clock OC 020" is so precise that it would take 10 billion years for it ...

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 ...

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 ...

The 2026 Doomsday Clock is ticking closer to midnight, signaling humanity edging to the "closest it has ever been to catastrophe" according to the Atomic Scientists, and the human race destroying ...

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) ...