The next generation of atomic clocks "ticks" with the frequency of a laser. This is about 100,000 times faster than the microwave frequencies of the cesium clocks which are generating the second at ...

On Jan. 28, the Doomsday Clock was set to 89 seconds to midnight, highlighting an encroaching closeness to "global catastrophe." By moving closer to the metaphorical midnight on the Doomsday Clock, ...