Why do we sleep?

We tend to think of sleep as a time when the mind and body shut down. But this is not the case; sleep is an active period in which a lot of important processing, restoration, and strengthening occurs. Exactly how this happens and why our bodies are programmed for such a long period of slumber … Read more

How is the date of Easter determined every year?

There’s a formula for it, known as computus, which should probably provide a good clue as to how long it’s worked this way. The general theory is that Easter is the Sunday following the full moon following the Spring Equinox in the Northern Hemisphere. That said, the Equinox in question is always said to fall on … Read more

Why are four-leaf clovers considered lucky?

Facts based explanation According to traditional superstition, such clovers bring good luck though it is not clear when or how that superstition got started. The earliest mention of “Fower-leafed or purple grass” is from 1640 and simply says that it was kept in gardens because it was “good for the purples in children or others”. … Read more