“Atomic clocks and our computer networks are the new, far superior form of time measurement, but we’re forcing them to keep in sync with this older form of measurement,” remarks Dr. David Gozzard, an ...

Every day on Earth lasts a tiny fraction longer than the one before it. The Moon’s gravitational pull on the oceans creates ...

WASHINGTON — Wednesday will be slightly shorter than usual, but you probably won't notice the difference even if you're watching the clock closely. Earth is expected to complete a full rotation on ...

Human extraction of groundwater is not just drying aquifers but quietly altering Earth’s rotation, with implications for ...