The Grand Canyon is one of the seven natural wonders of the world, but it's just one of many breathtaking marvels you'll find in Arizona. Explore the Copper State's remarkable history and its awe-inspiring landscapes, spectacular sunsets and infamous gunfights. From Tombstone to tent jails, from the Valley of the Sun to lost cities of gold, this aerial tour celebrates and studies a colorful state filled with equally colorful characters.
Sundays at 8pm ET/PT
Scandal in the Biosphere
A giant 2.2-acre terrarium, Biosphere 2 was hailed as a marvel of modern science - until the scientists who volunteered to live inside it were embroiled in scandalous rumors of sex and deceit.