The Great Icelandic Swim with Ross Edgley

Profiles of some of the men who choose to live off the grid in the unspoiled wilderness, where dangers like mudslides, falling trees and bears are all part of everyday life.

Viewers go deep into an Alaskan winter to meet six tough and resilient residents as they try to stay one step ahead of storms and man-eating beasts to make it through to spring. The closest neighbor to Sue Aikens is more than 300 miles away. Eric Salitan subsists solely on what he hunts and forages. Chip and Agnes Hailstone catch fish for currency in bartering for supplies, and Andy and Kate Bassich use their pack of sled dogs for transportation.

Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.

Filmed across six continents, this docuseries uses cutting-edge camera technology to capture animals' nocturnal lives, revealing new behaviours filmed in full color like never before.

Bear strands himself in popular wilderness destinations where tourists often find themselves lost or in danger.

Australian host Steve Irwin and his wife Terri run a wildlife refuge. Their shared passion is educating the world about wildlife, including the much feared crocodile and numerous venomous snakes. Steve's specialty is the capture and relocation of crocodiles. No animal appears too threatening to Steve, his true respect for animals is the foundation for everything he does.

Inspired by his late mentor, Will Smith spends 100 days facing extreme challenges, venturing from pole to pole with scientists, explorers and experts.

Actor Zac Efron journeys around the world with wellness expert Darin Olien in a travel show that explores healthy, sustainable ways to live.

Will Smith whose curiosity and wonder is positively infectious—is guided by National Geographic Explorers traveling to different corners of the world to get up close and personal with the weirdest, most unusual, dangerous and thrilling spectacles of the planet.

In 2004 Ewan McGregor and Charley Boorman embarked on an epic challenge to bike 20,000-miles across 12 countries and 19 time zones in just 115 days. Watch as two friends ride around the world together and, against all the odds, realize their dream.

Experience our planet's natural beauty and examine how climate change impacts all living creatures in this ambitious documentary of spectacular scope.

Consistently stunning documentaries transport viewers to far-flung locations ranging from the torrid African plains to the chilly splendours of icy Antarctica. The show's primary focus is on animals and ecosystems around the world. A comic book based on the show, meant to be used an as educational tool for kids, was briefly distributed to museums and schools at no cost in the mid-2000s.