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Season 15, episode 21. Keep your place, move between servers, and stay ready for the next episode.
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The All-American Bear
The life of the shy, intelligent black bear in the wild—foraging, mating, playing and constantly preparing for its remarkable hibernation—is captured for the first time on film by NOVA.
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Episode 2: How to Create a Junk Food
Episode 3: Buried in Ice
Episode 4: Why Planes Burn
Episode 5: Battles in the War on Cancer: A Wonder Drug on Trial
Episode 6: Battles in the War on Cancer: Turning the Tide
Episode 7: The Mystery of the Master Builders
Episode 8: Whale Rescue
Episode 9: The Man Who Loved Numbers
Episode 10: Race for the Superconductor
Episode 11: Can You Still Get Polio?
Episode 12: Pioneers of Surgery: The Brutal Craft
Episode 13: Pioneers of Surgery: Into the Heart
Episode 14: Pioneers of Surgery: New Organs for Old
Episode 15: Pioneers of Surgery: Beyond the Knife
Episode 16: Can the Vatican Save the Sistine Chapel?
Episode 17: Can the Next President Win the Space Race?
Episode 18: Do Scientists Cheat?
Episode 19: Who Shot President Kennedy?
Episode 20: The Light Stuff
Episode 21: The All-American Bear
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Episode 22: Can We Make a Better Doctor?