An MIT study points to an underground pulse of magma as the cause of Earth’s most severe mass extinction, which killed off 90 percent of marine organisms and 75 percent of life on land 252 million years ago.

The best atomic clock will only be out of sync 3.5 times in every 10 quintillion ticks. It could help test general relativity and hunt for gravitational waves

This next-gen atomic clock ticks at a steady beat, but time will tell just how well it tells time.

The best atomic clock will only be out of sync 3.5 times in every 10 quintillion ticks. It could help test general relativity and hunt for gravitational waves

Bluetooth- and ultra-wideband (UWB)-powered tracking devices pose serious security and personal safety concerns.

Particles called neutrons are typically very content inside atoms. They stick around for billions of years and longer inside some of the atoms that make up matter in our universe. But when neutrons are ...

Nature - But decades-long mystery of how long the particles live persists.