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'S10/E7 - Dorset'. Ben travels to Dorset to live for a week with Chris, a former paratrooper who has spent the last five years walking Britain's coastline, finding love and raising thousands for charity.

'S5/E15 - South North Water Diversion'. A £48bn, 2,400km network designed to divert 44.8bn cubic metres of water in China.

'S11/E8 - The Rising Tides'. The Alaskans push through the deep cold to increase their odds of survival.

'World's Most Amazing Walks With Robson Green. S1/E3 - Scotland'. Robson Green is in Scotland, a walkers' paradise hiking the Great Glen Way. This staggering rift valley cuts through the heart of the Highlands.

Changing Planet: Coral Special will embark on the third year of this 7-year project examining the issues facing the planet's most threatened ecosystems.

'Agatha Christie: Lucy Worsley On The Mystery Queen. S1/E2 - Destination Unknown'. Lucy Worsley uncovers the origins of Agatha Christie's macabre magic and, with some compelling characters, reveals carefully concealed secrets.

'S10/E7 - Dorset'. Ben travels to Dorset to live for a week with Chris, a former paratrooper who has spent the last five years walking Britain's coastline, finding love and raising thousands for charity.

'S11/E8 - The Rising Tides'. The Alaskans push through the deep cold to increase their odds of survival.

'S1/E7'. In this episode the team try and rescue owls from a church and a graveyard, and a rock hyrax turns up in school.

'S5/E1 - London's Super Sewer'. In this episode, a multi billion pound 32 kilometre super sewer tunnelled underneath the feet of nine million Londoners.

'S7/E16 - Bear Scare'. Sue repurposes a snow melter. Ricko repairs his cabin. Jessie builds a new dock. The Hailstones go beachcombing.

'S10/E9 - Ireland'. On Great Blasket Island, off the coast of Ireland, Ben stays with London couple Dan and Emily, who landed an extraordinary job as island caretakers on Europe's rugged western frontier.

'Sue Perkins' Big Adventure: Paris To Istanbul. S1/E6'. It's journey's end as Sue reaches Istanbul. She has her fortune told, falls in love with Turkish delight and explores the world's largest underground caves.

'S1/E2'. Sir David recreates Agatha's 1922 journey to Tasmania and Melbourne - from a jam factory to a power station and a vast homestead.

'S4/E4 - Revisit: Utah'. Ben makes an unprecedented third visit to see his old friends Bill and Bob, elderly twins living in the canyons of Utah, and realises that their paranoia about the outside world has grown.

'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.

'S1/E2 - Conflict'. As the Serengeti starts to dry out, competition hots up between the families of lions, cheetahs, baboons, elephants, ostriches and hyenas.

'S10/E10 - Thailand'. Ben meets Niall, who rescues and cares for street dogs in Koh Samui.

'S7/E17 - New Country'. Sue is out to hunt caribou. Ricko travels to a natural hot spring. Jessie moves to Brushkana. The Hailstones build a wall tent and go fishing.

'S5/E1 - London's Super Sewer'. In this episode, a multi billion pound 32 kilometre super sewer tunnelled underneath the feet of nine million Londoners.

'S1/E5 - Sicily Part 2'. Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

Changing Planet: Coral Special will embark on the third year of this 7-year project examining the issues facing the planet's most threatened ecosystems.

'Anton and Giovanni's Adventures in Sicily. S1/E1'. The first leg of Anton and Giovanni's Sicilian road trip begins in the port town of Sciacca. From there, it takes in Greek architecture, octopus fishing and a tango festival.

'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.

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

Two world-leading projects designed to tackle the crises facing Earth's rivers come under the spotlight.

'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.

'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.

'Anton and Giovanni's Adventures in Sicily. S1/E1'. The first leg of Anton and Giovanni's Sicilian road trip begins in the port town of Sciacca. From there, it takes in Greek architecture, octopus fishing and a tango festival.