Earth is spinning slower now, should we worry?

The latest findings in Earth science are brought to you by ancient astronomers who observed the heavens as much as 2,700 years ago.

Thanks to hundreds of records of lunar and solar eclipses carved in clay tablets and written into dynastic histories, modern scientists have determined that the amount of time it takes for Earth to complete a single rotation on its axis has slowed by 1.8 milliseconds per day over the course of a century, according to a report published recently in the Proceedings Of The Royal Society A.