Pint sized as a pea or big as a bowling ball, nutritional, durable, and versatile, nuts have been a staple of the human diet since time began, and archaeological evidence places them among our earliest foods.

Where in Washington D.C. is the nation's most incredible treasure chest? It's a library unlike any other in the world--the U.S. Library of Congress.

At 5:30 a.m., July 16, 1945, scientists and dignitaries awaited the detonation of the first atomic bomb in a desolate area of the New Mexico desert aptly known as Jornada del Muerto--Journey of Death, in Season 9, Episode 21, "The Manhattan Project".