John Minchillo/AP (Pizza ATM); Stockfood/Getty Images (Pizza)

12 inches: Diameter of pizzas available from the nation’s first pizza ATM, at Xavier University in Cincinnati, Ohio.

SOURCE: NBC News

74%: Percentage of Americans who can’t name all three branches of government.

SOURCE: The Annenberg Public Policy Center

$3 million: Amount a 1909 Honus Wagner baseball card sold for at a recent auction, making it the most expensive card in the world.  | SOURCE: WPXI Pittsburgh

1 trillion (1,000,000,000,000): Estimated number of microbe species on Earth, according to a new study. | SOURCE: The New York Times