BBC Earth HD

'S5/E16 - Stratolaunch'. Stratolaunch, the world's biggest all-composite plane in terms of wingspan, is being developed by Stratolaunch Systems.

'S7/E5 - Sweden'. Ben travels to Sweden to meet Annalisa, the Italian chose a life on the streets of Europe as a teenager, and now is developing a forest hideaway on the fringes of Swedish society for her and her toddler.

'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.

'S1/E3 - Invasion'. With the annual great migration approaching, a family of wild dogs moves in, ready to take advantage of the coming feast.

'S10/E11 - Lincolnshire'. Ben heads to northern England and stays with host Paul in Lincolnshire onboard his 30-year-old converted military truck. He discovers why Paul traded living in a house for life on the road.

'S7/E18 - Beware the Wild'. Sue builds a drainage system under her runway. Ricko explores old family land. Jessie sets up camp in Brushkana. The Hailstones go boating.

'S5/E2 - Bluewaters Island'. In this episode, a vast new island is appearing from the seas off Dubai to house the world's biggest observation wheel - twice the size of the London Eye.

'S1/E6 - Sicily Part 3'. Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

'S9/E1 - Chocolate Seashells'. Paddy McGuinness visits a factory that makes 4 million individual Belgian chocolates every day. Ruth discovers the origin of St Nicholas and later visits a chocolate museum.

'Anton and Giovanni's Adventures in Sicily. S1/E2'. 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.

'S5/E3 - Whistler'. In this episode, man versus snow - engineers battle the elements to build an incredible record breaking mountain town on the Canadian Pacific seaboard.

'S9/E2 - Sliced Bread'. Paddy McGuinness is at the Warburtons factory where he worked as a teenager.

'S2/E4'. Fitness fanatic Jonathan requires pioneering robotic surgery for a rare melanoma. And ex-postie Dave, who's 66, needs a massive vascular tumour removed.

'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.

'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.

'S5/E4 - Seattle's Floating Bridge'. In this episode, engineers have a mammoth challenge on their hands as they try to build a railway on one of the longest floating bridges in the world in Seattle.

'Anton and Giovanni's Adventures in Sicily. S1/E2'. 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.