Extras
Animal parents must overcome freshwater’s constant changes.
Animal parents must balance risk and reward to raise their young in grasslands.
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
James and Helen find themselves scrambling to coordinate their busy schedules.
Tristan and Siegfried find themselves in competition. Mrs. Pumphrey prepares Tricki for a visitor.
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
James and Siegfried clash over new technology at the vet practice.
Mrs. Pumphrey seeks help when she thinks Tricki is giving her the cold shoulder.
Nicholas Ralph and Rachel Shenton on bringing James and Helen Herriot's real family history to life.
See how Tricki spends a day on the set of All Creatures Great and Small.
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NOVA Season 53
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NOVA Season 46
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NOVA Season 37
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NOVA Season 28
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NOVA Season 23
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
See how ingenuity and teamwork keep the crew alive and doing science 250 miles above Earth.
Astronauts and Mission Control relive terrifying moments during construction of the ISS.
Find out why deadly flash floods are on the rise and how we can protect ourselves from them.
Explore mysterious 9,000-year-old Stone Age megastructures found in the Arabian Desert.
Discover how two revolutionary ancient inventions changed the course of humanity forever.
Discover how Homo sapiens outlasted Neanderthals – and how they helped make us who we are today.
Follow Homo sapiens as they venture out of Africa and spread farther than any other human species.