BBC Earth HD

'S11/E11 - Waking from Winter'. As winter comes to an end, Alaskans journey, hunt, and prepare for spring.

'S11/E12 - Destroyer of Worlds'. When spring finally arrives in Alaska, the landscape and waterways come back to life with a vengeance as the snow and ice melt.

'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.

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

'S4/E5 - Southern Australia'. A coast-to-coast journey through the Australian outback along the iconic Indian Pacific Railway. It takes two days to travel from Sydney to Adelaide.

'S1/E2 - Mountains'. A tour around some of the most amazing mountains on the planet, including the first footage of a Snow Leopard hunting in the peaks of Pakistan and grizzlies building winter dens.

'S1/E3 - Freshwater'. In an epic river journey following the descent of the planet's mightiest rivers from their mountain sources to the sea, this episode features swimming monkeys, giant salamanders and Amazonian river dolphins.

'S1/E4 - Caves'. Caves contain some of the most dramatic and unusual phenomena in nature, including birds' nests made from saliva and fish that cling to walls.

'Attenborough And The Jurassic Sea Monster'. 150 million years ago, dinosaurs ruled the land, but the oceans were dominated by a mysterious sea monster. Meet the pliosaur, the Tyrannosaurus rex of the seas!

'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.

'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.

'S1/E7 - Lisbon Part 1'. Michael rides the iconic Route 28 tram, embraces quirky Portuguese cuisine, loses himself to melancholic folk music, encounters passionate peacocks, and retraces the steps of a royal tragedy.

'S1/E8 - Lisbon Part 2'. Michael embraces the spirit of the great navigators, uncovers the origins of the spy with a license to kill, discovers a lavish 18th century party palace, and turns sleuth to find a secret restaurant.

'S10/E8 - Columbia'. Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

'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.

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

'S1/E2 - A Mountain to Climb'. Ash and team push through brutal jungle and treacherous rivers toward Table Mountain, battling wildlife, exhaustion and harsh terrain in a relentless bid for the summit.

'S1/E3'. The team enter the Serengeti where lions roam free and danger is always near. With water running out, their final challenge awaits.

'Attenborough And The Jurassic Sea Monster'. 150 million years ago, dinosaurs ruled the land, but the oceans were dominated by a mysterious sea monster. Meet the pliosaur, the Tyrannosaurus rex of the seas!

'S1/E1 - Thessaloniki to Delphi'. Arriving in the northern Greek city of Thessaloniki, Alice Roberts learns about local legend Alexander the Great and his father, Philip II, the King of Macedon.

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

'S1/E2 - A Mountain to Climb'. Ash and team push through brutal jungle and treacherous rivers toward Table Mountain, battling wildlife, exhaustion and harsh terrain in a relentless bid for the summit.