The Edge of Existence • 2020

58:40

In Snowball, Chris Packham tells the story of the astonishing moment in Earth’s distant past, when almost the entire planet froze – a glistening ‘Snowball Earth’ in the dark void of space. With ice wrapped around the planet to the equator, the chances of life surviving hang in the balance. Earth’s terrifying journey into the deep freeze started with fire, not ice. 800 million years ago, long before the age of the dinosaurs, before there was even animal life, the giant supercontinent Rodinia broke up. Earth’s vast powerful tectonic forces ripped the land apart, kicking off a series of events that resulted in huge amounts of carbon dioxide being sucked from the atmosphere and sending global temperatures plummeting. This plunge into the deep freeze couldn’t have come at a worse time. The very first forms of complex life - the ancestors to the amazing life we see around us today - were evolving but, as the planet froze to the equator, it looked like their days were numbered. Happily, Chris discovers that after 50 million years locked in ice, volcanic eruptions drove a great thaw. Life broke free from the ice and soon made a giant leap, from the microscopic, to the first animals big enough to see and touch.

S1E2 • Earth: One Planet, Many Lives • 2023 • Nature

41:41

David Schwimmer visits a forgotten Brazilian rainforest.

S1E5 • Mysterious Planet • 2020 • Nature

58:00

Animals that live in Asia's deserts and dry grasslands, including the Gobi bear, one of the rarest animals on Earth who communicate by leaving their scent on ancient trees. The Thar in India is the most densely populated desert in the world, and a place where Demoiselle cranes migrate thousands of miles to reach, being welcomed with grain put out by the local Jain community.

S1E6 • Asia • 2024 • Nature

58:12

David Attenborough presents a guide to wildlife that have adapted to survive in frozen mountain regions. On the high slopes of Mount Kenya, a pregnant High Casqued Chameleon must choose the right time in a daily cycle of tropical sun and frost at night to give birth. The mountains of Japan are the snowiest place on Earth, providing hostile conditions for a lone male Macaque cast out of his troop. In the remote Southern Alps of New Zealand, parrots feed on the dead, while in the Andes, flamingos thrive in high altitude volcanic lakes.

S1E3 • Frozen Planet II narrated by Sir David Attenborough • 2022 • Nature

28:33

The Siamese fighting fish is so aggressive it will fight its own reflection until it is exhausted. Recent research shows that the fighting behaviour varies and depends on the personality of the fish! Male kangaroos were once pitted against humans in the boxing ring, with the most impressive male kangaroos being solid blocks of muscle with a kick that can kill. Why do they fight and what skills must a winner have?

S4E6 • Natural Curiosities • 2018 • Nature

59:14

Are you genetically destined to despise brussels sprouts? We’re all human, but why are we all so different? With the help of a line-up of dogs and many sets of twins, Prof Alice Roberts explores what makes each of us totally unique.

S1E3 • Who Am I (Royal Institution Christmas Lectures) • 2018 • Nature