BBC Earth HD

'S2/E4'. Back together again the lion mums struggle to feed many mouths, and one cub is starving.

'S11/E15 - Japan'. This episode features Rupert, a Yorkshireman who moved to the remote countryside of southern Japan to grow rice.

'S12/E15 - Rising Waters'. Alaskans must rely on family to overcome rising waters as they seek the spring's offerings. The Hailstones must work together to overcome a quickly flooding tundra.

'S2/E4 - Big Blue'. David Attenborough explores a vast ocean desert where sperm whales must dive 1,000 metres just to feed.

'S7/E12 - Oregon'. Ben meets a photographer living out his childhood dream. Dan Price gave up his job as a photographer to live the remotest of lifestyles in a meadow in Oregon, USA.

'S1/E1 - Winter Is Coming'. See the long, dark, frozen winters to sweltering, bug-infested summers in remote Canada.

'S2/E5 - World's Longest Tunnel'. How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder.

'Sue Perkins' Big Adventure: Paris To Istanbul. S1/E2'. Sue finds her true calling as a mermaid, bathes in a tub of beer, and takes up Bavarian dancing for Munich Pride.

'S2/E5 - Headphones'. Headphones: these marvels of miniaturisation are worn by 30 million people in the UK. Hannah Fry visits Bose to find out how the teeny earbud tech works and meets the human testers with 'golden ears'.

'S2/E5 - Sri Lanka - The Blue Train from coast to Sri Lanka's Heart'. This journey across Sri Lanka to Nine Arch Bridge is a trip of a lifetime, travelling along on one of the world's best-preserved Victorian-era railways.

'S2/E6 - Orion Space Craft'. NASA's cutting-edge Orion spacecraft is the next big thing in space travel. Hear how developers hope the module will aid human exploration of Mars and of asteroids.

'S2/E6 - Lift'. Hannah goes behind the scenes to look at the technology behind the lift, entering a 246m high lift shaft to test everything from the brakes to her own fear of heights.

'S1/E6 - Future of Ageing'. Michael looks at advances at the frontier of medicine that are attempting to turn back the clock on ageing. He starts in Tel Aviv, where he tries some Hyperbaric Oxygen Therapy.

'S11/E16 - Thailand'. This episode features a young woman who gave up a thriving business career in Bangkok to start her own farmstead in remote Thailand.

'S12/E16 - The Warming'. With spring in full effect across the Arctic, residents of Alaska must seize seasonal opportunities. Sue Aikens sets out to hunt small game but must be wary of her recent surgery.

'S2/E7 - Millau Viaduct'. The Millau Viaduct in South West France is the tallest bridge on the planet.

'S2/E5 - Sri Lanka - The Blue Train from coast to Sri Lanka's Heart'. This journey across Sri Lanka to Nine Arch Bridge is a trip of a lifetime, travelling along on one of the world's best-preserved Victorian-era railways.