Why Do You Know That?

Here's a new something that is probably worth trying and if it goes well, maybe we'll make it an irregular. It's the converse of "any questions." The idea is to contribute those bits of knowledge that seem really cool even if they are not directly applicable to anything.

-- The letters YKK that you find on many zippers stands for the initials of Yoshida Company Limited transliterated from Japanese.

-- Hamsters can run up to seven miles a night on their little exercise wheels.

-- Charles Darwin's grandfather was Josiah Wedgwood of Wedgwood china, the father of English potters.

-- We can dream at any point during the sleep cycle, not just during REM sleep.

-- Original title of the Beatles' song "Yesterday" was "Scrambled Eggs."

What some some interesting factoids that you know for no good reason?