Cosmos: A SpaceTime Odyssey: Season 1, Episode 11

1 - 11: The Persistence of Memory

The brain is the focus of this fascinating portion of our journey as Dr. Sagan examines another of the intelligent creatures with whom we share the planet Earth — whales. Then we wind through the maze of the human brain to witness the architecture of thought. We see how genes, brains, and books store the information necessary for human survival.