BBC Earth HD

'S1/E6'. It's a race to the finish line in Tromsø for the four celebrity teams. Which will get there first and be crowned champions?

'S1/E10 - Singapore'. Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

'S1/E4 - Kansai Airport'. The construction of Kansai International Airport in Osaka Bay, Japan, on the largest man-made island in the world, was one of the most ambitious engineering projects of modern times.

'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.

'S1/E10 - Singapore'. Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

'S1/E5 - Crowded Continent'. In the planet's most densely populated continent, animals live at extremely close quarters with people, from tigers making a home in town to elephants stopping traffic for food.

'S1/E6 - The Arid Heart'. In the heart of Asia lie vast arid lands. These deserts and dry grasslands are so hostile, they push life to the limit. The animals that live here are some of the earth's toughest.

'S1/E7 - Saving Asia'. Many passionate people are dedicated to saving the wild animals of Asia. These individuals and their ingenious solutions give us hope and optimism for the future of the continent.

'S1/E2'. Sue continues her Alaskan adventure of a lifetime, following the old gold trail route into the interior of America's largest and wildest state.

'S1/E3'. In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

'S1/E1 - Norway'. In Norway we follow a train journey that begins in the capital Oslo and heads all the way to Bodo inside the Arctic Circle. The first leg is the Dovre line, running from to the remote northern wonderland of Trondheim.

'S1/E2 - Canada'. Ride the rails through Canada on the iconic Rocky Mountaineer train on it's jaw-dropping loop from Vancouver to the heart of the Rockies.

'S1/E3'. Historian David Olusoga uncovers how the British Empire lives on across the world.

'Unwrapping King Tut: Secrets of the Mummy'. Deep in the Egyptian desert, British archaeologist Howard Carter and his team slowly peel the bandages off Tutankhamun.

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.

'S1/E2 - The South'. Bettany enjoys the breath-taking journey through the Tamil Nadu hills, between Mettupalayam and Udhagamandalam (Ooty).

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

'S1/E1'. A collection of perceived inferences as to the daily life of the residents of Pompeii. Both from the point of view and elite members of society to the lowest slave.

'Unwrapping King Tut: Secrets of the Mummy'. Deep in the Egyptian desert, British archaeologist Howard Carter and his team slowly peel the bandages off Tutankhamun.

'S1/E10 - Singapore'. Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.