Earth’s quicker spin challenges civil time as experts weigh a first negative leap second to keep satellites, networks, and ...

The Earth’s spin is really starting to pick up speed. As CBS News reports, June 29 was the fastest day in recorded history, clocking in at 1.59 milliseconds shorter than the average 24 hours we know ...

Thanks to a speed-up of Earth's rotation, the length of the astronomical day and the length of the clock day aren't quite ...