Chinese researchers have developed the world's smallest and most robust atomic clock that can survive the rigors of war.

World-record chaser Hilde Dosogne is used to running extreme distances. Still, she says she underestimated the challenge. She ...

Learn more› By Annie Chou Annie Chou is a writer focused on sleep. She has tested several sunrise alarm clocks, white noise machines, and other sleep-related gear. After a new round of testing ...

The bombs exploded 12 seconds apart near the marathon’s finish line on Boylston Street. According to Richard DesLauriers, the special agent in charge of the FBI’s Boston office, the bombs ...

Researchers at the University of Colorado Boulder (CU Boulder) and the University of California, Los Angeles (UCLA) have collaboratively found a new approach to building nuclear clocks using ...

Over the past decade, increasing efforts have been made to develop technologies that enable the operation of all-optical atomic clocks in a portable form factor outside laboratory environments relying ...

Scientists seeking ultra-precise timekeeping have turned to nuclear clocks. Unlike optical atomic clocks that rely on electronic transitions, nuclear clocks measure energy transitions within an atom’s ...

Atomic clocks that excite the nucleus of thorium-229 embedded in a transparent crystal when hit by a laser beam could yield the most accurate measurements ever of time and gravity, and even ...

However, building such a clock has posed major challenges—thorium-229, one of the isotopes used in nuclear clocks, is rare, radioactive, and extremely costly to acquire in the substantial ...

Residents of the United States must change their clocks twice a year- once when daylight saving time begins, and then when it ends to return to standard time. Daylight saving time begins on the ...

DALLAS – Tal Robinson established the BMW Dallas Marathon in 1971 with a 26.2-mile race. At the time, he placed a $25 advertisement in Runner's World, inviting runners from across the country to ...