New clock may end time as we know it

NPR:

America’s master clock is one of the most accurate clocks on the planet: an atomic clock that uses oscillations in the element cesium to count out 0.0000000000000001 second at a time. If the clock had been started 300 million years ago, before the age of dinosaurs began, it would still be keeping time — down to the second.

Try that with your fancy-schmancy Apple Watch.