This might sound alien, but even on Earth some animals’ biological clocks are set by the tides rather than the sun. So-called circatidal rhythms govern the lives of certain fish and crabs.

Yes, $90,000—a sum you could probably use to explore the cosmos and bring back an actual alien artifact, ... Assuming you have $90,000 to spend on a wall clock. But what a wall clock!

A night-time glass of milk in his garden and a chunk of gained time resulted in one man believing he had been beamed up by an alien craft. It was an "unseasonably mild" night in late October 1998 ...