Life on Our Planet

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1. 1Chapter 1: The Rules of LifeEvolution. Competition. Mass extinction. Three fundamental rules have driven the rise and fall of life on Earth for over four billion years.43m
2. 2Chapter 2: The First FrontierFor billions of years, land on Earth was uninhabitable. But in the seas, predation allowed species to thrive before — and after — two mass extinctions.54m
3. 3Chapter 3: Invaders of the LandSprawling moss, towering trees, flying insects, limbed amphibians: Early species vied for domination as the land went from hostile to hospitable.57m
4. 4Chapter 4: In Cold BloodAfter Earth's third mass extinction, mammals' surviving ancestors ruled the supercontinent Pangea. But lizards soon ushered in the age of reptiles.55m
5. 5Chapter 5: In the Shadow of GiantsThe formation of continents with varied environments allowed for an explosion of biodiversity — and turbo-charged the evolution of mighty dinosaurs.51m
6. 6Chapter 6: Out of the AshesThe dinosaurs met their end with a cataclysmic asteroid impact. Rising from the ashes, birds reinvented themselves into a dynasty 10,000 species strong.53m
7. 7Chapter 7: Inheriting the EarthEmerging from the dinosaurs' shadows, mammals went from underdogs to global power, with game-changing adaptations that would conquer land, air and sea.52m
8. 8Chapter 8: Age of Ice and FireAs the Ice Age thawed, humans rose above the rest. But the possibility of a sixth mass extinction now looms: Has our ingenuity caused our downfall?50m