From Russia to Iran: Crossing Wild Frontier (2017)

The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.

Morgan Freeman presents his quest in order to find how most religions perceive life after death, what different civilizations thought about the act of creation and other big questions that mankind has continuously asked.

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

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

British comedian Richard Ayoade (later taken over by Joe Lycett), accompanied by a celebrity guest, takes a ruthlessly efficient approach to travel, covering everything top tourist destinations have to offer in just 48 hours.

Award-winning actor and nervous explorer Eugene Levy steps out of his comfort zone for a whirlwind tour of the world's most beautiful and intriguing destinations.

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

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.

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.

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.