Find out what’s speeding up Earth’s rotation and why it may force timekeepers to delete a second ...

Today's sea level rise is significant enough to slow the rotation of the planet by just over a millisecond per century.

Friday, March 20, 2026 (at exactly 10:46 a.m. ET), marks both its triumphant return in the Northern Hemisphere and the spring equinox. Get ready for longer days, warmer weather, a ...

The history of Earth is written on the great tablets of tectonic plates. The motions of plates shaped land masses, formed ...