BBC Earth HD

'S1/E4 - Switzerland'. Bill Nighy narrates a journey that starts at Tirano and climbs up through the Italian Alps and lakes through into Switzerland, taking in the Landwasser Viaduct.

After a life spent travelling the world, Sir David Attenborough returns home to show us the hidden natural wonders of his favourite place on earth.

'S11/E9 - Isle of Wight'. Ben meets a family who have carved out a slice of wilderness for a simple life on an Isle of Wight cliff-side, but face legal challenges and the risk of a landslide.

'S12/E9 - Rites of Winter'. The everyday struggles of living in the secluded state of Alaska where one wrong decision could cost you your life.

'S1/E5 - Sahara'. David Attenborough's breathtaking journey through Africa. In the Sahara Desert, huge zebras battle for resources, camels seek water, and tiny swallows search for an oasis.

'S7/E6 - Ethiopia'. Native Glaswegian Susan rejected retirement for a remote region of Africa, where she has set up both a school and a mountain-top restaurant.

'S2/E1'. The race begins in Belém, Northern Brazil, one of the country's least populated regions. Teams must pass through five checkpoints - across the length of South America - to reach the finish in Frutillar, Chile.

'S1/E5 - Maglev'. The Shanghai Transrapid, or Shanghai Maglev is the fastest passenger train in operation on the planet and is able to reach a phenomenal top speed of 431kph.

'S6/E2 - Zambia'. Comedians Babatunde Aleshe and Kae Kurd go on an unforgettable journey through the Lower Zambezi Valley, a place where the local wildlife is almost as terrifying as the roads.

'S2/E2'. Intruder males close in on the Pride's young cubs and the dominant males have vanished.

'S1/E5 - Spain'. Beginning near Leon, part of the famous north Spanish Pilgrimage, in the Picos de Europa mountains, this railway journey then runs through the Basque country before arriving in Bilbao.

'S1/E2 - The New Wild'. Mammals have mastered every environment on Earth, but today the planet is changing faster than ever. Mammals must change with it to have a chance of survival in this, the new wild.

'S1/E1'. Commencing from the city of Auckland, New Zealand from a Train travels through the North Island passing viaducts and passing through rich farmlands to the dramatic scenery of the central volcanic plateau.

'S2/E3'. Under attack from intruder male lions, the mums with young cubs must find the pride.

'S11/E10 - Utah'. Ben visits Scott Brodie in Utah, who has built an off-grid life in the Canyonlands, and the episode explores Scott's resilience and the 'prepper' mindset.

'S12/E10 - Tastes Like Home'. Alaskans soldier through the heart of dark winter in pursuit of the resources they desperately need for survival.

'S2/E1 - Orion Space Craft'. Discover the inside story behind the Orion Space Craft, an engineering feat designed to sustain astronauts for years in one of the universe's harshest environments.

'S1/E5 - Spain'. Beginning near Leon, part of the famous north Spanish Pilgrimage, in the Picos de Europa mountains, this railway journey then runs through the Basque country before arriving in Bilbao.