Why Do You Know That?

One of my new favorties that we haven't done for a little while. It's the converse of "auto mechanics to quantum mechanics," where the idea now is to contribute those bits of knowledge that seem really cool even if they are not directly applicable to anything.

My contribution:

The first parking meters were operated in Oklahoma City in 1935.

Tony LaRussa not only has won the World Series and Manager of the Year in both leagues, he is a lawyer, holding a J.D. from Florida State.

Since WWII, half of the Presidents have been left-handed.

Your turn. what do you know and why do you know it?