Learn Something New Every Day

from scarlettina
In the comments below, share a factoid or a bit of info that other people can learn about from you (so no making stuff up that isn't true)... advice, educational stuff, whatever. However, do not repeat knowledge on a subject that has already been commented on, and if you see something you didn't know about before make sure to let the person know.

Every one of you has something to contribute. Please share! There may be prizes... .