The best sunrise alarm clocks help you wake up gently and start your day energized. See our top picks from Hatch, Philips, ...

Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

(NEXSTAR) — Roughly a month ago, most Americans lost an hour of precious Sunday sleep as daylight saving time began and our clocks jumped forward. The U.S. again could be on the precipice of ...