Mr. Smarty Pants Knows

Cats can get blackheads on their chins. Unlike human acne, cat acne is not limited to puberty.

A baseball contains 330 yards of yarn.

The first video uploaded to YouTube was "Me at the Zoo" on April 23, 2005. Shot by Yakov Lapitsky, it's only 19 seconds long and shows one of YouTube's founders, Jawed Karim, at the San Diego Zoo.

According to Michael Sivak, a psychologist and researcher, the single biggest predictor for traffic deaths is the local murder rate. It's a better predictor than substance-abuse problems, safety belt use, and number of older drivers.

Jessica Simpson is addicted to nicotine gum but has never smoked a cigarette.