An amazing tale of discovery and exploration, National Geographic uses careful research and meticulous re-creations to bring to life the first crossing of what would become the United States.

Explores the human body through individual case studies, highlighting cutting-edge medical technology and life-and-death personal dramas.

With careful research and meticulous re-creations, National Geographic brings to life the first crossing of what would become the United States. Two hundred years after this epic journey, viewers can go back in time with Lewis, Clark, their guide Sacagawea, and the brave Corps of Discovery as they discover the adventure, danger, and beauty of the unmapped West.