BBC Earth HD

'S3/E3 - Utah'. Ben Fogle meets two brothers who live in the wilds of Utah.

'S1/E7 - Railways and War'. Michael has travelled through two centuries of history aboard some of the world's most spectacular railways. Michael shares his thoughts on the role of railways in war.

'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.

'S9/E4 - Cornwall'. We join Ben on the rugged cliffs of Cornwall, where he is staying with Davina and Todd and their family. Davina and Todd are a spirited couple who left the city for an empty field.

'S11/E6 - From Here to There'. Alaskans test their will and luck against Dark Winter's obstacles.

'S2/E8 - El Niño'. In this episode we explain what 'El Niño' is and investigate why and how the weather pattern has caused some of the deadliest disasters of our times.

'S3/E4 - Sweden'. Ben Fogle meets a Brit who now lives in the Arctic Circle.

'S7/E10 - Ultimate Sacrifice'. Sue goes ptarmigan hunting. Andy and Denise battle jumble ice. Jessie races in the Iditarod.

'S2/E9 - Cyclones'. An intense area of low pressure that forms over warm waters, tropical cyclones are responsible for some of the most catastrophic weather events.

'S1/E3 - Episode 3'. In this final episode, the archaeologists complete the excavation of a wealthy residence, a bakery, and a laundry and, in doing so, discover evidence of what people were doing in the city during its final hours.

'S1/E3 - Episode 3'. A fight with intruders leaves the lion pride males injured and the mothers with cubs vulnerable to attack. Xudum the female leopard takes risks to find a mate.

'S1/E8 - Railways and the Industrial Revolution'. Michael goes back to the cradle of the railways, Rainhill, a town in England, where a competition was held to discover the most improved locomotive engine for the railway.

'S1/E8'. How did ancient engineers perfect their vessels to reach further, and endure the seas?

'S1/E1'. Starting in Alexandria, Alice searches for Cleopatra, discovers how the Romans and the Greeks reacted to the treasures of Ancient Egypt, and learns how a slave became a sultan and built his own caste

'S1/E3 - Storm Worlds'. Professor Brian Cox explores the solar system's wildest weather, encountering powerful lightning, strange metallic frosts and monsoon rains on a moon a billion kilometres from Earth.

'S9/E5 - Shetlands'. Ben journeys to one of Britain's furthest outposts - the Shetland Islands to meet Helen and Jason, a couple on the edge of the weather-beaten island of Yell.

'S11/E7 - The Foundation'. Alaskans must rely on solid foundations to persist through Dark Winter.

'S1/E9'. Before metal tools was invented stone age engineers were creating extraordinary structures known as megaliths. Huge in scale, they were precision-built to align with astronomical events.

'S1/E8 - Railways and the Industrial Revolution'. Michael goes back to the cradle of the railways, Rainhill, a town in England, where a competition was held to discover the most improved locomotive engine for the railway.