Where Do I Come From • 2018 • episode "S1E1" • Who Am I (Royal Institution Christmas Lectures)

42:56

Once life arrived in the Galapagos, it exploded into unique and spectacular forms. David Attenborough investigates the driving forces behind such evolutionary innovations. We learn that life must be able to adapt quickly in these ever-changing volcanic landscapes. It has resulted in species found nowhere else in the world, such as giant whale sharks and marine iguanas that can spit sea-salt from their noses, dandelion seeds that grow into tree-sized plants and spiders that can blend perfectly into the darkness. Adaptation has been the key to survival in these islands so far, but the story of life in the Galapagos doesn’t end here. The catalyst that triggers these explosions of life remains in place.

S1E2 • Galapagos with David Attenborough • 2010 • 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

35:44

Siberian tigers are the largest of all cats. In historic times, the tiger's range was vast, covering much of Asia. Over the last century, they've experienced an almost total population crash, and at least 97% of those tigers have gone.

S1E1 • The Secret Lives of Big Cats • 2019 • Nature

49:49

Witness the planet's breathtaking diversity -- from seabirds carpet-bombing the ocean to wildebeests eluding the wild dogs of the Serengeti.

S1E1 • Our Planet • 2019 • Nature

43:58

The Nile has many sources. This episode looks at the headwaters in the Great East African Rift Valley and the Rwenzori Mountains' melting snow.

S1E1 • Wild Nile • 2014 • Nature

44:18

Their habitat once stretched across the Prairies, but when humans wiped out the one thing they eat, the black-footed ferret disappeared. The only native North American ferret, this mysterious animal became the most endangered species in the world. For many years, they survived only in zoos. Now a fledgling project is attempting to bring the black-footed ferret back to Saskatchewan. This dramatic story of the ferrets’ reintroduction to the wild unfolds in Return of the Prairie Bandit, a new documentary by Kenton Vaughan set in the stunning prairie of southern Saskatchewan.

S50E13 • The Nature of Things • 2011 • Nature