Mr. Smarty Pants Knows

With a population just over half a million, Fresno, Calif., is the largest U.S. city without an interstate running through it.

While serving in the Navy, Johnny Carson's biggest moment was filling in for Rita Hayworth during a magic show given by Orson Welles. He let Welles saw him in half.

The word "window" may have been derived from "wind hole," which were openings in structures to provide ventilation and prevent internal fires.

Humans produce about 1.5 billion pounds of poop a day.

When inhaled, nicotine travels from lung to brain in about seven seconds. Scientists estimate that a fully smoked cigarette delivers about 1 mg of nicotine to the lungs; a lethal dose is 30-60 mg.