Watch Back 2 School: Explorers

Discover the story behind the most important voyage of discovery in American history: the journey of Meriwether Lewis and William Clark to chart the vast, unknown West from 1803-1806.

Roger Daltrey heads to Montana to find out just how Lewis and Clark survived their epic quest. Complete with shooting and skinning, it's a down and dirty look at how two American legends pulled off a miracle.

Did explorers discover the New World long before Christopher Columbus staked his claim in 1492? Rebuild the ships, trace the routes, and test the artifacts to examine one of the greatest mysteries of all time.

One of the most influential leaders of her tribe, Native American princess Pocahontas possessed a vision of peaceful cooperation with the European settlers that was far ahead of its time.

Marco Polo's 25-year journey to the East left a lasting legacy that changed the world - and a legend filled with colorful stories.

Christopher Columbus was one of the most passionate and driven men in history. But while he changed the world, he received little credit in his lifetime, and died a broken and forgotten man.

Ten years after his famous 1492 voyage, Christopher Columbus, awaiting the gallows on criminal charges in a Caribbean prison, plotted a treacherous final voyage to restore his reputation.