Our night train travels through the mystical midnight sun past the most diverse Norwegian landscapes. We meet people who want to restore the balance in nature in their own way.

The realm of cold is a harsh territory, but it is also full of opportunities; only the most resilient creatures manage to thrive in an environment where adaptation is the key to survival.

A bomb cyclone detonates across northeast America, snaring an elderly Michigan couple in a mass freeway pile-up. A hiker loses her nerve high on Ben Nevis.

Jeremy travels to Japan to try to uncover the truth behind two of their most extraordinary River Monster legends; he is about to discover a monster like nothing he has ever encountered before...

A family and their pets are in danger when a gator finds a cool shady spot under their house, and a training day for intern Grace becomes scary when the team finds a huge gator at a local ranch.

Gary, Arlie and Damon rescue two gators - one near a restaurant and the other at an industrial equipment supplier - while the team gets Gator Country ready for the busiest day of the year.

We delve into dense jungles where humidity dictates all aspects of life; creatures here not only contend with predators and the search for food, but also with diseases that thrive in high moisture.

Hundreds died when the Sobral Santos sank, many allegedly eaten alive. Jeremy retraces the doomed boat's last voyage as he tries to uncover what was behind the Amazon Apocalypse.

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

Germany's Harz mountains stand for wild nature, with snowstorms in the winter and rain-soaked forests in the summer; filmmaker Uwe Anders travels to the Harz to capture both landscape and wildlife.

We uncover nature's fiercest rivalries where oceans collide with land. From white sharks ambushing seals to polar bears battling walruses, this episode captures the ultimate frontier.

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

Tennessee's Great Smoky Mountains live up to their name as America's most popular national park goes up in flames. Meanwhile a mega typhoon pulverises Macao.

Hundreds died when the Sobral Santos sank, many allegedly eaten alive. Jeremy retraces the doomed boat's last voyage as he tries to uncover what was behind the Amazon Apocalypse.

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

In a river ecosystem in Northern Portugal, we follow Eurasian otter, Kiko, from his first explorations outside his family to his independence as a guardian of his territory.

We delve into dense jungles where humidity dictates all aspects of life; creatures here not only contend with predators and the search for food, but also with diseases that thrive in high moisture.

Jeremy Wade sets out to discover the true river monster of South America; piranhas get all the press, but is there a more fearsome predator lurking in its rivers?

Alaskans pursue scarce resources in anticipation of the coming spring. In Kiwalik, Chip and Agnes Hailstone set up camp for future resource gathering. Andy's trip to his woodpile doesn't go as planned.

The Highlands is a vast landscape dominated by hills, forests and glens; it's a place that's been heavily altered by people and climate, but it's still home to some of Scotland's most iconic species.

We uncover nature's fiercest rivalries where oceans collide with land. From white sharks ambushing seals to polar bears battling walruses, this episode captures the ultimate frontier.

Alaskans pursue scarce resources in anticipation of the coming spring. In Kiwalik, Chip and Agnes Hailstone set up camp for future resource gathering. Andy's trip to his woodpile doesn't go as planned.

Tennessee's Great Smoky Mountains live up to their name as America's most popular national park goes up in flames. Meanwhile a mega typhoon pulverises Macao.

Jeremy Wade sets out to discover the true river monster of South America; piranhas get all the press, but is there a more fearsome predator lurking in its rivers?