BBC Earth HD

'S1/E3'. Sue, and her new staff member Rick, are almost ready for their paying guests to arrive at the Kavik River Camp. Just a couple details left to be dealt with: a lost filter for her water line and a missing shipment of frozen food.

'S4/E5 - Revisit: Rathlin Island'. Ben Fogle revisits Rauri on Rathlin Island, who left HR for off-grid life. They repaint Rauri's house and discuss his health struggles, and a daring journey he made to help those in need.

'S4/E3 - New Zealand'. A stunning rail journey through the heart of New Zealand's best scenery starts in Greymouth. Taking in Arthur's Pass National Park, Cass and on to the Waimakiriri gorge before ending at Christchurch.

'S1/E1 - Episode 1'. Following the largest fish in the world on a year-long voyage to find out where they disappear to after feeding en masse on Australia's Ningaloo Reef.

'S4/E5 - Ibiza'. In a secluded valley on the island of Ibiza, Ben lives in a commune with an ex-navy officer who shunned a life of wealth and excess on the high seas for a back-to-basics existence.

'S12/E17 - High Risk, High Reward'. With the waterways open, Alaskans navigate the rivers for reconnaissance and resources. Andy Bassich and Denise Becker must endure a grueling process of launching their boats for a critical hunt.

'S1/E2 - In the Grip of the Seasons'. The only option for the Arctic's top predators, the wolf, the Arctic fox and the polar bear, is to continually adapt to their changing world, exploiting the good times and enduring the bad.

'S4/E6 - Revisit: Suffolk'. Join Ben as he revisits Will Lord, a true British caveman, in Suffolk's woodlands. Discover how Will's prehistoric dreams have evolved over three years and how his loved ones embrace this lifestyle.

'S1/E4'. Glenn must fish to rebuild his food supply, but it's the mosquitoes, not the fish, that are biting. Sue is spots a strange figure in the distance and investigates it. Finding nothing, she searches for black gold instead.

'S8/E10'. Michael Portillo visits the Bayeux Tapestry Museum to admire the striking 70-metre-long work of art. On the Normandy coastline, he recalls the D-Day landings of 1944.

'S1/E2'. Halfway through their trek, Lucy and the team face dense forests and the ever-present threat of elephants, as rations run dangerously low.

'S1/E3 - The Bat'. How did the bat get so hungry? Chris Packham explores how the drive to find food has shaped animal life. The origin of bums, guts, jaws and super-hearing.

'S4/E4 - Norway'. In this episode we travel from Bergen to Oslo, on a super-fast train.

'S4/E1'. Armed with his 1899 Appleton's Guidebook to Alaska, Michael Portillo begins his journey amid the snow-capped mountains and ice-cold inlets of the Kenai Peninsula.

'S9/E4'. Tom Webster meets aspirational New Zealanders on their daring, determined and sometimes perilous journeys to build the residential homes of their dreams, using innovation and a Kiwi can-do attitude.

'S4/E6 - Mongolia'. Ben ventures deep into the freezing tundra of Outer Mongolia to meet a couple who left their comfortable life in America to become missionaries in this remote corner of the world.

'S2/E3'. Syed's life hangs in the balance as his testicular cancer spreads into his heart.

'S2/E9 - Breaking Point'. Sue Aikens heads out on an 85-mile unpredictable journey through the Alaskan tundra. Meanwhile, Chandalar Glenn searches for a fire kit.

'S4/E2'. Michael Portillo travels north on the Alaska Railroad to Talkeetna, a remote former gold rush town, where he experiences the pioneering lifestyle of a modern homesteader and helps clear land for a log cabin.

'S4/E4 - Norway'. In this episode we travel from Bergen to Oslo, on a super-fast train.