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 ...

Off the coast of Japan, biologists netted a pea-size jellyfish with an unusual circadian clock — a chance finding that suggests there are likely more overlooked biological timekeeping mechanisms to be ...

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

Magnetic crystals provide the earliest evidence yet of the plate tectonics that likely made Earth habitable, pushing its start back by 140 million years.

Scientists have found the oldest direct evidence for tectonic motion on Earth by more than half a billion years ...