Nuclear weapons, climate change and biological threats are the biggest concerns.

At this point, atomic clocks are old news. They’ve been quietly keeping our world on schedule for decades now, and have been through several iterations with each generation gaining more accuracy. They ...

There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and Technology (NIST) have improved their atomic clock based on a trapped ...

Researchers at the UK’s National Physical Laboratory (NPL) have created a tiny atomic fountain ...