Mr. Smarty Pants Knows

First Lady Dolley Madison's favorite flavor of ice cream was oyster (she was wife of James Madison, U.S. president from 1809 to 1817).

The most efficient food you can carry, in terms of calories per pound, is butter, which is why Arctic explorers carry so much of it.

Scientists at the University of Geneva recently discovered how chameleons change color. Transparent nano-objects called photonic crystals, found in a layer of cells in their skin dubbed iridophores, are tuned to change the way light is reflected.

The duck vocals for "Disco Duck" by Rick Dees were done by Ken Pruitt. He moved away before the song became popular, and Michael Chesney did the duck vocals for the concert tour.

The average-sized adult carries about five pounds of dead skin.