From airborne adventures to ground-covering treks, offering a closer look at the instincts and behaviors that drive these awe-inspiring migrations.

Monarch butterflies undertake their annual migration from Mexico, home to mountains, deserts, jungles and beaches, to Canada, home to vast swaths of wilderness.

Will heads to the South Pole, where temperatures can drop below minus 100 degrees Fahrenheit; he skis and treks across giant icefields.

Will ventures deep into the Ecuadorian Amazon on an expedition in search of deadly creatures; they abseil 200 feet into a cave network.

Will, Bryan and Carla join local Waorani elder Penti Baihua in the Amazon, in search of the world's biggest snake: the giant green anaconda.

Guided by happiness expert professor Dacher Keltner and local writer Tshering Denkar, Will Smith treks to one of the highest villages in the Himalayas.

Will travels to the South Pacific on an expedition to a remote island threatened by rising seas. An exploration into an incredible marine paradise.

Will travels deep into the Kalahari Desert to meet the San people, one of the oldest hunter-gatherer groups on Earth. He must join them on a hunt.

Will joins an expedition to dive under the ice at the North Pole to help polar ecologist Allison Fong capture world-first scientific samples.

Big families and strong relations are the secrets to success for savanna elephants; emotional bonds and wisdom help them navigate a changing world.

The 150 elephants remaining in the Namib Desert must be as tough as the landscape to survive.

Revealing the secrets of the world's most elusive elephant species and how they have adapted to life in their rainforest home.

Across Asia, elephants must use their intelligence and understanding of us to adapt to the human world.

Bertie Gregory uncovers the hidden world of bees and their extraordinary talents. Follow the life of a single bee as her family races toward winter.

The honeybee hive is recovering and preparing for winter, but what are the threats bees face worldwide, and how can humanity help them survive?

Embark on India's ancient blue mountains, where humans and nature collide.

Octopuses are masterminds capable of solving complex problems, strategizing & planning; the extraordinary superpower of their minds is the secret to success.