BBC Earth HD

'S1/E1'. Tony Robinson uncovers machines that are the world's unsung heroes. From a vehicle that makes airport runways safe for landing, to the atomic clocks keeping humankind on time.

'S1/E1'. The coral reefs of our oceans are at a tipping point. Consecutive bleaching, caused by warming seas are leaving them with challengingly short periods of time to restore themselves.

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

'S5/E2'. In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

'S4/E10 - Edmonton to Jasper'. Following his 1899 Appleton's guide, Michael explores a glossy, glassy, oil-rich Edmonton, second city of Alberta.

'Travels With Agatha Christie and Sir David Suchet. S1/E4'. David explores Agatha's passion for surfing and travel and looks beyond the cliches to Hawaii's real island culture, from cacao farmers to lei makers.

'S1/E1'. Tony Robinson uncovers machines that are the world's unsung heroes. From a vehicle that makes airport runways safe for landing, to the atomic clocks keeping humankind on time.

'S1/E6 - Next-Gen Solar'. Meet the engineers creating a new wave of solar megastructures that are super-efficient and even work at night.

'S7/E10 - New Zealand'. While many of the new lives Ben dives into feel like a gritty struggle against the elements, Lucy and Tim's relocation to New Zealand looks more like something from an aspirational blog or YouTube channel.

'S5/E2'. In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

'S4/E10 - Edmonton to Jasper'. Following his 1899 Appleton's guide, Michael explores a glossy, glassy, oil-rich Edmonton, second city of Alberta.

'S1/E1'. Tony Robinson uncovers machines that are the world's unsung heroes. From a vehicle that makes airport runways safe for landing, to the atomic clocks keeping humankind on time.

'S1/E6'. Paul and Bob decide to try and catch a legendary pike. Facing the future, they write a eulogy for each other as the sun sets on their final fishing expedition.

'S2/E1'. Paul and Bob travel to the picturesque River Usk in Wales, where Paul's father first taught him to fish as a child. They discuss their respective childhoods and reflect on their own family lives.

'S1/E3 - Summer'. In summer there is 24-hour daylight in the poles. The land becomes green and productive and there is an abundance of food for the baby animals.

'S2/E3 - Australia'. Ben reunites with a couple living off the coast of Australia, and discovers the logistical nightmares they overcome to make a home for themselves on a desert island.

'S4/E10 - Edmonton to Jasper'. Following his 1899 Appleton's guide, Michael explores a glossy, glassy, oil-rich Edmonton, second city of Alberta.

'S1/E1'. Tony Robinson uncovers machines that are the world's unsung heroes. From a vehicle that makes airport runways safe for landing, to the atomic clocks keeping humankind on time.

'S7/E10 - New Zealand'. While many of the new lives Ben dives into feel like a gritty struggle against the elements, Lucy and Tim's relocation to New Zealand looks more like something from an aspirational blog or YouTube channel.

'S5/E2'. In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

'S1/E1'. The coral reefs of our oceans are at a tipping point. Consecutive bleaching, caused by warming seas are leaving them with challengingly short periods of time to restore themselves.

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

'S12/E9 - Rites of Winter'. The everyday struggles of living in the secluded state of Alaska where one wrong decision could cost you your life.

'S1/E10 - Singapore'. Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

'Travels With Agatha Christie and Sir David Suchet. S1/E5'. As David recreates Agatha's Canada tour, he goes stargazing and ranching, and hitches a train across the spectacular Rockies.

'S2/E7'. Clive Myrie meets soon-to-be-grandmother Tracey and suggests to her that borrowing a pet might lower her blood pressure.

'S2/E8'. Zoe Ball prescribes ten minutes of sunshine a day for retired woodworker Neville, who has suffered a series of heart attacks.

'S1/E1 - Port Augusta to Darwin'. Michael Portillo ventures down under to ride aboard the legendary Ghan Railway.

'S4/E1'. Armed with his 1899 Appleton's Guidebook to Alaska, Michael Portillo begins his journey amid the snow-capped mountains and ice-cold inlets of the Kenai Peninsula.

'S22/E2 - Lincolnshire Wolds'. In Lincolnshire, high-flyers Zara and Giuliano set out to build a 400-square-metre malthouse-inspired home, but run into problems from the get-go.

'S2/E9 - Take a Hot Bath'. Roman Kemp is 'soaking up' life in Glasgow, where children's entertainer Susan is desperate for a good night's sleep. Luckily, Roman has packed his rubber duckie - and some science.

'S2/E10 - Eat Dark Chocolate'. Can a sweet treat ever be good for you? Zoe Ball is in Birmingham, trying to tempt fitness fanatic Bilal away from sugary sweets and towards flavanol-rich dark chocolate.

'S7/E11 - Croatia'. As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

'S5/E3'. A once in a generation eruption on a volcanic island. In the United States, heavy rain and snow melt submerge a town and in Italy, giant hail pulls up pavements, and traps drivers in their cars.

'S1/E1 - Hyperloop'. Meet the engineers who are building super-fast levitating pods inside vacuum tubes, that could change the world.

'S1/E1 - Port Augusta to Darwin'. Michael Portillo ventures down under to ride aboard the legendary Ghan Railway.

'S22/E2 - Lincolnshire Wolds'. In Lincolnshire, high-flyers Zara and Giuliano set out to build a 400-square-metre malthouse-inspired home, but run into problems from the get-go.

'S2/E9 - Take a Hot Bath'. Roman Kemp is 'soaking up' life in Glasgow, where children's entertainer Susan is desperate for a good night's sleep. Luckily, Roman has packed his rubber duckie - and some science.

'S2/E10 - Eat Dark Chocolate'. Can a sweet treat ever be good for you? Zoe Ball is in Birmingham, trying to tempt fitness fanatic Bilal away from sugary sweets and towards flavanol-rich dark chocolate.

'S7/E11 - Croatia'. As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

'S12/E9 - Rites of Winter'. The everyday struggles of living in the secluded state of Alaska where one wrong decision could cost you your life.

'S1/E1 - Hyperloop'. Meet the engineers who are building super-fast levitating pods inside vacuum tubes, that could change the world.

'S22/E2 - Lincolnshire Wolds'. In Lincolnshire, high-flyers Zara and Giuliano set out to build a 400-square-metre malthouse-inspired home, but run into problems from the get-go.

'S2/E9 - Take a Hot Bath'. Roman Kemp is 'soaking up' life in Glasgow, where children's entertainer Susan is desperate for a good night's sleep. Luckily, Roman has packed his rubber duckie - and some science.

'S2/E10 - Eat Dark Chocolate'. Can a sweet treat ever be good for you? Zoe Ball is in Birmingham, trying to tempt fitness fanatic Bilal away from sugary sweets and towards flavanol-rich dark chocolate.

'S4/E1'. Armed with his 1899 Appleton's Guidebook to Alaska, Michael Portillo begins his journey amid the snow-capped mountains and ice-cold inlets of the Kenai Peninsula.

'S12/E9 - Rites of Winter'. The everyday struggles of living in the secluded state of Alaska where one wrong decision could cost you your life.

'S2/E4 - Arkansas, USA'. Ben Fogle reunites with a former medical student living in the woodlands of Arkansas. Ben discovers the impact a series of injuries have had on his physically demanding wild lifestyle.

'S1/E1 - Port Augusta to Darwin'. Michael Portillo ventures down under to ride aboard the legendary Ghan Railway.

'S2/E9 - Take a Hot Bath'. Roman Kemp is 'soaking up' life in Glasgow, where children's entertainer Susan is desperate for a good night's sleep. Luckily, Roman has packed his rubber duckie - and some science.

'S2/E10 - Eat Dark Chocolate'. Can a sweet treat ever be good for you? Zoe Ball is in Birmingham, trying to tempt fitness fanatic Bilal away from sugary sweets and towards flavanol-rich dark chocolate.

'S7/E11 - Croatia'. As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

'S5/E3'. A once in a generation eruption on a volcanic island. In the United States, heavy rain and snow melt submerge a town and in Italy, giant hail pulls up pavements, and traps drivers in their cars.

'S1/E5 - Winter'. As a super-freeze spreads and darkness descends on the poles, the snow and ice become surprising allies for some animals.

'S2/E5 - Fiji, Pacific Ocean'. Ben Fogle is reunited with seafarer Rick, who made a fresh start on the Pacific island of Fiji after previously living off the coast of French Polynesia.

'S12/E10 - Tastes Like Home'. Alaskans soldier through the heart of dark winter in pursuit of the resources they desperately need for survival.

'S4/E1'. Armed with his 1899 Appleton's Guidebook to Alaska, Michael Portillo begins his journey amid the snow-capped mountains and ice-cold inlets of the Kenai Peninsula.

'S1/E1 - Sweden'. Paddy and Chris head to Sweden to get back to nature and embody 'friluftsliv'. It can lower stress and improve mental health, but can they embrace nature to get the reboot needed?

'S11/E7 - Australia, Fort Grey'. Ben embarks on an epic journey to meet one of the most remote families he's encountered, uncovering what drove academics and married couple Bec and Reece to leave civilisation for complete isolation.

'S1/E2 - Sydney to Broken Hill'. Michael Portillo explores New South Wales, steered by his 1913 Bradshaw's Guide.

'S1/E1 - Hyperloop'. Meet the engineers who are building super-fast levitating pods inside vacuum tubes, that could change the world.

'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.

'S2/E5'. It's episode five and the penultimate leg of the race to Frutillar in Southern Chile. Teams will race from Tigre, on the banks of the Paraná River up high into the far north of Argentina.

'S7/E12 - Oregon'. Ben meets a photographer living out his childhood dream. Dan Price gave up his job as a photographer to live the remotest of lifestyles in a meadow in Oregon, USA.

'S5/E4'. In Tennessee, a river breaks its banks. In Canada a Tornado rips through a construction site. And in Papua New Guinea, a rain flooded river raises the danger levels.

'S1/E2 - Ocean Power'. Visionaries from Spain, Sweden and Scotland develop innovative technologies like sub-sea kites and floating platforms to harness tidal energy and provide reliable, clean power to coastal communities worldwide.

'S1/E2 - Sydney to Broken Hill'. Michael Portillo explores New South Wales, steered by his 1913 Bradshaw's Guide.