Finding the Way • 1990 • episode "5/12" • Trials of Life

59:22

The hunt for life within the long-dead bones of dinosaurs may sound like the stuff of Hollywood fantasy - but one woman has found traces of life within the fossilised bones of a T rex. Dr Mary Schweitzer has seen the remains of red blood cells and touched the soft tissue of an animal that died 68 million years ago. Most excitingly of all, she believes she may just have found signs of DNA. Her work is revolutionising our understanding of these iconic beasts.

Nature

45:55

The island of Barro Colorado in the Panama Canal is full of mysteries, some involving the wide diversity of wildlife, and some involving the island itself. Every year, hundreds of scientists and students come here to uncover the rainforest's secrets, but this year is very different. The island is running dry and no one knows why. Follow several research teams as they observe, experiment, and conduct research in this pristine habitat, and most pressing of all, try to find out what happened to the rain and when it will come again.

2016 • Nature

3:50

When you picture the lowest levels of the food chain, you might imagine herbivores happily munching on lush, living green plants. But this idyllic image leaves out a huge (and slightly less appetizing) source of nourishment: dead stuff. John C. Moore details the "brown food chain," explaining how such unlikely delicacies as pond scum and animal poop contribute enormous amounts of energy to our ecosystems.

TED-Ed • Nature

21:30

Eating meat made us human...by giving us bigger brains, better tools, and spoken language. The human need for beef has driven history across the hemispheres, but how did we turn an ancient mega-beast into the cow we have today?

14/17 • Big History • 2013 • Nature

58:01

No continent experiences seasonal change as extreme as North America. From tornados that roar across the prairies, to Arctic air sweeping through the humid, southern swamps - this is a land where pioneering animals thrive. In winter, lynx prowl the snowy Yukon for snowshoe hares, whilst Florida manatees seek hot springs to escape the freeze. In the creeks of Tennessee, fish build spectacular underwater pyramids to find a mate. Fireflies light up the forests during summer nights, roadrunners cruise the spectacular deserts of Arizona and polar bears leap from rocks to hunt beluga whales.

6/7 • Seven Worlds, One Planet • 2019 • Nature

58:38

Armed with the latest global scientific research, Chris Packham and Liz Bonnin battle it out to find the definitive answer to the burning question - which are best, cats or dogs? Part 1: The animals go head to head in a series of rounds testing different aspects, beginning in this edition with intelligence, sensory powers and physical prowess. On the search for answers, dog-lover Chris comes face to face with a pack of wolves, while feline fan Liz confronts an Arabian wild cat to discover how the relationship humans and their pets have evolved.

Part 1/2 • Cats v Dogs: Which is Best? • 2016 • Nature