On July 9, 2025, scientists at the International Earth Rotation and Reference Systems Service (IERS) reported that the Earth completed its rotation approximately 1.3 to 1.6 milliseconds faster than ...

The step-by-step rotation of a molecular gear mounted on an atomic-scale axis is now controlled by a scanning tunnelling microscope. Gears are microfabricated down to diameters of a few micrometres.

The Earth has lost enough groundwater to thirsty humans to measurably tilt the planet’s axis of rotation. The net water lost from underground reservoirs between 1993 and 2010 is estimated to be ...