BBC Earth HD

'S1/E6'. Tony Robinson looks under the bonnet of some innovative machines leading the green revolution, from a Welsh hydrogen-powered car to a solar plane used to train the next generation of pilots.

'S2/E4 - Frozen South'. Frozen Planet returns with a spellbinding journey through magical icy lands.

'S11/E8 - Roswell, New Mexico'. Ben travels to the desert near Roswell, meeting 70-year-old Karen, rolling up his sleeves to help, and learning about the hardships she has faced throughout her life.

'S11/E14 - Transitions'. Alaskans harness the power of the sun as they toil through summer.

'S1/E6 - New Zealand'. Jump aboard New Zealand's Northern Explorer, the longest running passenger service in the country. The train travels 423 miles along the North Island Main Trunk Line.

'S1/E2'. The boys board a packed train to Rajasthan during Diwali, the vibrant festival of lights. Known as the 'land of kings', Rajasthan enchants the pair, with its grand forts and opulent palaces.

'S1/E6'. Tony Robinson looks under the bonnet of some innovative machines leading the green revolution, from a Welsh hydrogen-powered car to a solar plane used to train the next generation of pilots.

'S1/E5 - Spain'. Beginning near Leon, part of the famous north Spanish Pilgrimage, in the Picos de Europa mountains, this railway journey then runs through the Basque country before arriving in Bilbao.

'S1/E5'. The race has reached its fifth and penultimate leg as the four celebrities and their loved ones navigate their way 1500km north from Sarajevo to Germany's capital, Berlin.

'S7/E8 - Iceland'. Ben journeys to the freezing coastal waters of Iceland to live with Hakon, a former carpenter who overcame alcohol and embraced a clean, solo life in the wilderness on an private island.

'S1/E2'. The boys board a packed train to Rajasthan during Diwali, the vibrant festival of lights. Known as the 'land of kings', Rajasthan enchants the pair, with its grand forts and opulent palaces.

'S1/E6'. Tony Robinson looks under the bonnet of some innovative machines leading the green revolution, from a Welsh hydrogen-powered car to a solar plane used to train the next generation of pilots.

'S11/E8 - Roswell, New Mexico'. Ben travels to the desert near Roswell, meeting 70-year-old Karen, rolling up his sleeves to help, and learning about the hardships she has faced throughout her life.

'S11/E14 - Transitions'. Alaskans harness the power of the sun as they toil through summer.

'S1/E4 - Tangled Worlds'. Asia's jungles are beautiful and exceptionally diverse, but whilst they provide shelter, food and opportunity, they are also full of dangers and hidden threats.

'S7/E9 - Siberia'. Maverick scientist Nikita was a former maths student living in the city, when his father asked for help with an extraordinary experiment in one of the most remote places on the planet.

'S1/E6'. It's a race to the finish line in Tromsø for the four celebrity teams. Which will get there first and be crowned champions?

'S1/E5 - Spain'. Beginning near Leon, part of the famous north Spanish Pilgrimage, in the Picos de Europa mountains, this railway journey then runs through the Basque country before arriving in Bilbao.

Storms are becoming stronger. But the fightback has begun. And it's taking place above the clouds. Today, cutting-edge technology is helping us track the most dangerous weather like never before.

'S1/E4 - Friends Forever'. Far from their home planet, those aboard the International Space Station face the emotional realities of isolation, while relationships are tested when war breaks out on Earth.

'S1/E3'. Rob and Rylan are on the final leg of their Indian adventure. They're bound for Varanasi, the spiritual heart of India, where millions come to wash away their sins before they die.

'S1/E6 - New Zealand'. Jump aboard New Zealand's Northern Explorer, the longest running passenger service in the country. The train travels 423 miles along the North Island Main Trunk Line.

'Grand Designs: Transformations Australia. S1/E2'. In two inspiring transformations, a couple turn a simple pavilion house on Sydney's northern beaches into a stylish pad filled with bespoke marble furniture.

'S2/E3'. Lauren, who's 30, has had a rare cancer called myxoid-liposarcoma since she was eight. Can surgery fix it and finally allow Lauren to get on with her life?

'S11/E9 - Isle of Wight'. Ben meets a family who have carved out a slice of wilderness for a simple life on an Isle of Wight cliff-side, but face legal challenges and the risk of a landslide.

'S11/E15 - The Way of the Bear'. Alaskans must capitalize on the resources of the Arctic Summer.

'S2/E1 - South Africa'. Take a ride on Rovos Rail's luxury train that meanders from Pretoria to Durban, taking in a private game reserve and the site of one of South Africa's bloodiest battles.

'S1/E3'. Rob and Rylan are on the final leg of their Indian adventure. They're bound for Varanasi, the spiritual heart of India, where millions come to wash away their sins before they die.