Brain cells that track our location also can track time and distance, a study finds. This could explain how the brain uses place and time to organize memories throughout our lives.
Researchers have finally determined the length of a day on the ringed planet (gas shrouds any landmarks, so it was tough). Precision matters: A faster spin influences the speed of surface winds.
Scientists working to create the perfect atomic clock have a fundamental problem: Right now, on the ceiling, time is passing just a bit faster than it is on the floor.