The annual update of the Doomsday Clock was announced at 10 a.m. this morning in Washington, DC. The Bulletin of the Atomic Scientists announced that the Doomsday Clock this year was set to 90 seconds ...

We’re once again approaching the annual resetting of the Doomsday Clock. Last January, the Science and Security Board of the Bulletin of Atomic Scientists, a group of very smart people, ...

Ray Calloway is active, articulate and mostly free from the chronic health conditions that can dog aging citizens. Most weeks, the 92-year-old travels from his home near Golden West College to the ...

Optical lattice clocks are emerging timekeeping devices based on tens of thousands of ultracold atoms trapped in an optical lattice (i.e., a grid of laser light). By oscillating between two distinct ...