Chinese astronomers made the first recorded observation of Halley's Comet in 240 B.C.
Diamonds burn if you heat them somewhere between 1,400 to 1,600 degrees Fahrenheit.
Baseball's first All-Star game was played July 6, 1933, in Chicago's Comiskey Park. The AL won, 4-2.
Herbert Hoover was the first US president born west of the Mississippi. He was born 8/10/1874 in West Branch, Iowa.
That metal thing shoe salesmen use to measure your feet is called the Brannock device.