BBC Earth HD

In Arizona, lightning strikes from so high above the ground, through such clear air, that it creates the perfect conditions for the most electrifying show on Earth.

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.

See the long, dark, frozen winters to sweltering, bug-infested summers in remote Canada.

The invention of railways coincided with the period of European colonisation. A look at how the Europeans used railways to further their imperial ambitions in other parts of the world.

Bettany enjoys the breath-taking journey through the Tamil Nadu hills, between Mettupalayam and Udhagamandalam (Ooty).

Alice ends her adventure in Aswan, whose quarries provided the granite for the country's vast collection of Ancient Egyptian monuments. She then takes a boat to see the extraordinary Philae Temple.

In Arizona, lightning strikes from so high above the ground, through such clear air, that it creates the perfect conditions for the most electrifying show on Earth.

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.

See the long, dark, frozen winters to sweltering, bug-infested summers in remote Canada.

The invention of railways coincided with the period of European colonisation. A look at how the Europeans used railways to further their imperial ambitions in other parts of the world.

Bettany enjoys the breath-taking journey through the Tamil Nadu hills, between Mettupalayam and Udhagamandalam (Ooty).

Alice ends her adventure in Aswan, whose quarries provided the granite for the country's vast collection of Ancient Egyptian monuments. She then takes a boat to see the extraordinary Philae Temple.

Michael explores how railways enabled the dissemination of cultural, social, religious and political ideas, and celebrates the cultures which his antique Bradshaw's railway guidebook has introduced him to.

With winter tightening its grip, Alaskans buckle down and ready themselves for the long months ahead.

Ben Fogle travels to Brazil to meet Chris, a Scotsman who has chosen to make his home in one of the most remote areas of the jungle near the Amazon river.

Bettany sails through the Corinth Canal, and from Corfu she ends her journey at Ithaca.

Alice ends her adventure in Aswan, whose quarries provided the granite for the country's vast collection of Ancient Egyptian monuments. She then takes a boat to see the extraordinary Philae Temple.

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.

See the long, dark, frozen winters to sweltering, bug-infested summers in remote Canada.

Deep in Borneo's forests, Levison meets the last-remaining endangered orangutans, and learns more about their unique lives and their environment, as they face the threat of deforestation and poaching.