Explore the world’s cities and meet the wild animals that have found ways to survive here.

Islands are wildlife sanctuaries, but surviving in isolation comes with extreme challenges.

The high peaks of the world are spectacular places where only the toughest survive.

The Jungle is home to more animal species than anywhere else on Earth.

Deserts are lands of such brutal extremes they have shaped remarkable survival stories.

From vast herds to epic predator and prey battles, Grasslands are home to huge spectacles.

An exploration of the deepest, darkest realms of the ocean, spanning countless species to a depth of 2,000 meters.

Jungles cover roughly three percent of our planet yet contain fifty percent of the world’s species. Experience the countless flora and fauna that inhabit these unique areas.

A look at the shallow seas of the earth, from coral reefs to kelp forests and beyond.

Trees are Earth’s largest organisms and are also one of the planet’s oldest inhabitants. Seasonal forests (unlike tropical rain-forest) are the largest land habitats. A third of all trees grow…

Despite the lack of rain, deserts are the most varied of our ecosystems. In fact, about thirty percent of the earth’s land surface is covered in desert. Explore the unique…

Experience life in the most hostile corners of the planet by exploring the terrain, seasons, and animals of the Arctic and Antarctic.

This episode deals with savanna, steppe, tundra, prairie, and looks at the importance and resilience of grasses in such treeless ecosystems. Their vast expanses contain the largest concentration of animal…

An exploration of the world’s major mountain ranges and the habitats they create.

Although merely 3% of water on earth, fresh water plays an important part in the planet’s weather and erosion. It is immensely important for all non-marine wildlife, which drinks fresh…

Although often overlooked, caves are remarkable habitats with bizarre wildlife. Explore the structures created inside the earth as well as the adaptations animals have made to thrive in these environments.

A global tour examining the behaviors of animals and revealing the effects of climate change on their environments.

The formation of continents with varied environments allowed for an explosion of biodiversity — and turbo-charged the evolution of mighty dinosaurs.

The dinosaurs met their end with a cataclysmic asteroid impact. Rising from the ashes, birds reinvented themselves into a dynasty 10,000 species strong.

Emerging from the dinosaurs’ shadows, mammals went from underdogs to global power, with game-changing adaptations that would conquer land, air and sea.

As 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?

Evolution. Competition. Mass extinction. Three fundamental rules have driven the rise and fall of life on Earth for over four billion years.

For billions of years, land on Earth was uninhabitable. But in the seas, predation allowed species to thrive before — and after — two mass extinctions.

Sprawling moss, towering trees, flying insects, limbed amphibians: Early species vied for domination as the land went from hostile to hospitable.

After Earth’s third mass extinction, mammals’ surviving ancestors ruled the supercontinent Pangea. But lizards soon ushered in the age of reptiles.