We explore the planet's fiercest alpine arenas. Bobcats hunt through snowbound forests, red foxes track mice under ice, and snow leopards risk fatal falls in Himalayan chases.

Told through the experiences of its native species, this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.

North America's Pacific coast sits on a very active stretch of Earth's crust, where slowly moving tectonic plates help create a long chain of volcanoes of nearly 10,000km.

The Cape in South Africa is struck by a violent storm and catastrophic wildfires that overwhelm the emergency services.

We cross continents to reveal the world's most dramatic survival arenas. From lionesses hunting zebra to dingoes clashing with echidnas, every grassland teems with rivalry and risk.

From Canada's waterlogged wilderness comes unbelievable stories of a twenty-foot monster that attacks humans. Investigation turns into obsession as Jeremy tries to explain the widespread accounts.

Alaskans must take advantage of the long days to prepare for the long freeze that lies ahead. In Kiwalik, the Hailstones embark on a seasonal native harvest, hunting for seagull eggs along the river.

Told through the experiences of its native species, this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.

North America's Pacific coast sits on a very active stretch of Earth's crust, where slowly moving tectonic plates help create a long chain of volcanoes of nearly 10,000km.

Alaskans must take advantage of the long days to prepare for the long freeze that lies ahead. In Kiwalik, the Hailstones embark on a seasonal native harvest, hunting for seagull eggs along the river.

A student chronicles 2017's Hurricane Maria as it decimates Puerto Rico. A hailstorm destroys a Dallas family home. A wilderness hiker clings on for dear life in a flash flood.

From Canada's waterlogged wilderness comes unbelievable stories of a twenty-foot monster that attacks humans. Investigation turns into obsession as Jeremy tries to explain the widespread accounts.

Alaskans must take advantage of the long days to prepare for the long freeze that lies ahead. In Kiwalik, the Hailstones embark on a seasonal native harvest, hunting for seagull eggs along the river.

Told through the experiences of its native species, this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.

We cross continents to reveal the world's most dramatic survival arenas. From lionesses hunting zebra to dingoes clashing with echidnas, every grassland teems with rivalry and risk.

From Canada's waterlogged wilderness comes unbelievable stories of a twenty-foot monster that attacks humans. Investigation turns into obsession as Jeremy tries to explain the widespread accounts.

Alaskans must ensure they are prepared to withstand the extreme cold that lies ahead when winter arrives.

The Great Barrier Reef, a series of coral reefs along Queensland's coast, is the largest structure created by organisms. It changes with the tides, the seasons and shaping forces such as erosion.

Europe sits on active tectonic zones, from Iceland to Italy. Ancient volcanoes under its cities and coasts still pose risks that could affect Europe and beyond.

Alaskans must ensure they are prepared to withstand the extreme cold that lies ahead when winter arrives.

A student chronicles 2017's Hurricane Maria as it decimates Puerto Rico. A hailstorm destroys a Dallas family home. A wilderness hiker clings on for dear life in a flash flood.

From Canada's waterlogged wilderness comes unbelievable stories of a twenty-foot monster that attacks humans. Investigation turns into obsession as Jeremy tries to explain the widespread accounts.