Maya Angelou was the first African American woman to write a non-fiction best seller. The book Green Eggs and Ham was written by Dr. Seuss as part of a bet with a publisher that he couldn't write a book only 50 words. (Seuss won.) Cold water and hot water sound different when they're being poured, because heat changes the viscosity of the water. The oldest university in North America was founded in 1551. It's the National University of Mexico, founded by King Charles I of Spain. A jockey named Frank Hayes once won a horse race, even though he passed away during the race. His body maintained the proper position as his horse crossed the finish line first. The only full-length book that Eminem has ever read is LL Cool J's autobiography.