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A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.

Our ancient powers have endured for centuries but destruction is close at hand. What will cause their downfall? And who will create a lasting legacy?

Follow the journey of the mighty Zambezi - Africa's wildest river. It floods across endless plains, fuelling the migration of 30,000 wildebeest, turning villages into islands accessible only by boat.

British comedian and travel enthusiast Griff Rhys Jones explores the Frozen Wilds of Manitoba, North Canada, and visits a town that sometimes has more polar bears than people.

Our ancient powers have endured for centuries but destruction is close at hand. What will cause their downfall? And who will create a lasting legacy?

In Kavik, Sue looks for rabbits before the sun sets for the long dark winter. Johnny, traps with a rabbit hide. Avery and his brother Gage, experience a white-out.

A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.

Sue Perkins enjoys a night out with Kyoto's geishas, goes free diving with some ama divers and visits Hiroshima. In Tokyo, she explores how the Japanese are tackling the future.

Marvel at a recording studio that turned an outdated vessel into a boat that really rocks, then travel to a high-end hotel with a catch: it used to be a prison.

Follow the journey of the mighty Zambezi - Africa's wildest river. It floods across endless plains, fuelling the migration of 30,000 wildebeest, turning villages into islands accessible only by boat.

A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.

Sue Perkins enjoys a night out with Kyoto's geishas, goes free diving with some ama divers and visits Hiroshima. In Tokyo, she explores how the Japanese are tackling the future.

Marvel at a recording studio that turned an outdated vessel into a boat that really rocks, then travel to a high-end hotel with a catch: it used to be a prison.

Follow the journey of the mighty Zambezi - Africa's wildest river. It floods across endless plains, fuelling the migration of 30,000 wildebeest, turning villages into islands accessible only by boat.

A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.

Marvel at a recording studio that turned an outdated vessel into a boat that really rocks, then travel to a high-end hotel with a catch: it used to be a prison.

Join Ryan and his team as they continue the mammoth trek that began in Vaduz, Liechtenstein, meeting a fascinating collection of characters along their path, as they draw ever closer to their goal of arriving in Montreux on the shores of Lake Geneva, in this double episode of Extreme Treks.

Sue Perkins enjoys a night out with Kyoto's geishas, goes free diving with some ama divers and visits Hiroshima. In Tokyo, she explores how the Japanese are tackling the future.

A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.

Nick's journey begins in Prague, where he learns about the city's remarkable 600-year-old astronomical clock from its keeper.

Mist swirls around the base of Shanghai's skyline. From the city, tigers and monkeys seem as unreal and distant as dragons and mermaids emerging through the mist. Yet they exist as rare survivors in an extraordinary and diverse landscape. From snow leopards to wild horses, and from alligators to elephants, China's iconic wildlife is a lot more than just pandas.

In Kavik, Sue looks for rabbits before the sun sets for the long dark winter. Johnny, traps with a rabbit hide. Avery and his brother Gage, experience a white-out.

The second leg of Anton and Giovanni's trip takes them to Mount Etna, Europe's most active volcano, where they are joined by 2021 Strictly champion Rose Ayling-Ellis.

A flood brings new challenges for the big cats; for the first time, the lion cubs experience water and the danger it brings.