The Enemy Within • 2017 • episode "S2E1" • Savage Kingdom

29:18

The third episode looks at the last generation of killer dinosaurs - carnivores that took killing to a new level. By the end of the cretaceous period - 75 millions years ago - these gigantic and specialised hunter-killers had spread throughout the globe. In the southern continents it was the powerful and muscular abelisaurids that reigned supreme but it was the famous tyrannosaurids (or tyrant dinosaurs) that dominated in the north. Whilst the northern daspletosaurus hunted in gangs, using its highly developed smell and hearing to take down opponents like the horned rhino-sized beast, chasmosaurus, in the Southern hemisphere the small-skulled majungasaurus reigned. And though the sharp toothed majungasaurus was an efficient killer of the much smaller feathered rahonavis that did not stop it from occasionally turning cannibal and hunting its own.

S1E3 • Planet Dinosaur • 2011 • Nature

59:06

In Madagascar, the travellers encounter the biggest and the smallest lemurs on earth. But they are searching for the aye-aye, a peculiar lemur which, according to local legend, brings death to those who encounter it.

S1E3 • Last Chance to See • 2009 • Nature

58:14

The series concludes by showcasing the work of scientists studying climate change to discover how exactly the environment is changing and its impact for all life on Earth. Glaciologist Alun Hubbard investigates Greenland's melting glaciers from within, while astronaut Jessica Meir describes witnessing forest fires across Europe from the international space station, and reflects on how changing weather patterns are interconnected.

S1E6 • Frozen Planet II narrated by Sir David Attenborough • 2022 • Nature

45:07

In the thick of the jungle of Rwanda's Volcanoes National Park, an infant mountain gorilla has been caught in a snare. If the rope is not removed quickly enough, the young gorilla could lose its hand. In order to remove the snare, a team of veterinarians will first need to sedate the infant's mother. But if the infant screams too much, the three 400-pound adult males that form part of this gorilla group will all attack. Everything must go perfectly, or there's no telling what could happen. And being jungle medicine, things rarely go perfectly. The pioneering group of vets performing this medical intervention is known as Gorilla Doctors. Led by Canadian Mike Cranfield, they work in Rwanda, the Democratic Republic of Congo and Uganda, where the world's last Mountain Gorillas can be found.

S54E02 • The Nature of Things • 2014 • Nature

55:35

Five hundred million years ago, our previously eyeless distant ancestral creatures suddenly developed eyes, thereby marking a dramatic leap in evolution. What enabled our ancestors to suddenly evolve with eyes has been a long-unresolved great mystery in the history of our life. Now, scientists are close to cracking the mystery of the amazing story of the birth of our eyes, using cutting-edge DNA research. Travel back to a super realistic prehistoric world recreated by CGI to witness the astonishing story behind the birth of our eyes.

S1E1 • Leaps in Evolution • 2016 • Nature

57:07

Andrew Scott narrates a special programme which celebrates winter and explores how animals and plants rise to the challenges it brings. With their world encased in snow and ice, animals must find the most inventive ways to survive and even benefit from the cold. Caribou become ice road travellers as it gets slippery underfoot, stoats make their own fur bedding, and snow monkeys find a warm bath. Emperor penguins are built for the cold weather, but even they must find their own tricks to endure the world's most savage winter.

S1E3 • Earth's Seasonal Secrets • 2016 • Nature