As the sun fades across the land, Alaskans brace for Dark Winter's return.

Pike tries one last hunting trip before catching the plane back. Becky and Denenize continue looking for a moose. Bentley and Felicia begin work on building a new dock. Pierre looks for something he can eat.

Underwater cameraman Ken O'Sullivan travels along the south coast of Ireland searching for fin whales, finding out that their migration routes have only recently started to be documented.

Hannah uncovers the technological game changers that have made the smartphone a reality.

An epic dinosaur mystery. Why do so many iconic Jurassic beasts lie buried in this unforgiving corner of Wyoming desert?

Steve goes in search of Deadly Predators with the greatest super-senses.

As the sun fades across the land, Alaskans brace for Dark Winter's return.

Unable to shoot from her right side due to injury, Sue Aitkens travels to Fairbanks to invest in some left-handed weaponry, while the Hailstones hunt for moulting ducks.

Incredible facts and myths about the animal kingdom are put to the test. This time... Is it true that a giant squid can sink a ship?

Gregg Wallace visits the biggest tortilla factory in Europe, while Cherry Healey takes on the hottest chilli in the world and Ruth Goodman reveals how the Elizabethans treated their ruff collars.

In Kenya, an incredibly rare event pushes a struggling elephant family to its limits. To save their dynasty, they have to work together and overcome the challenge of a lifetime.

From a vineyard that has been making one of Britain's favourite tipples - Port - travel down the line that once transported it to the city that gave it its name: Porto.

In Kavik, Sue heads to a nearby fishing hole to try and replenish her food supply and, in Nenana, Jessie does squirrel maintenance around camp to protect his dog food supply.

Unable to shoot from her right side due to injury, Sue Aitkens travels to Fairbanks to invest in some left-handed weaponry, while the Hailstones hunt for moulting ducks.

Incredible facts and myths about the animal kingdom are put to the test. This time... Is it true that a giant squid can sink a ship?

Gregg Wallace visits the biggest tortilla factory in Europe, while Cherry Healey takes on the hottest chilli in the world and Ruth Goodman reveals how the Elizabethans treated their ruff collars.

In Kenya, an incredibly rare event pushes a struggling elephant family to its limits. To save their dynasty, they have to work together and overcome the challenge of a lifetime.

The end of the thaw provides Alaskans a brief respite before winter's fury is unleashed. In Iliamna, Erik and Martha aim to load up on salmon before they return to Wiseman for the dark winter.

On the hunt for a steady supply of dog food, Becky and family establish a "Fish Camp" on the shores of Great Slave Lake. In search of an elusive Caribou herd, new comer Jon Grenier ventures into the wilds of Northern Quebec, and Bentley Kakekayash embarks on an early season moose hunt.

We re celebrating Italy and following the Neapolitan Line. Travelling west from the gelato shops of the seaside town of Pescara, we cross Italy through the wild Apennine Mountains.

Naples. 15-year-old Nicola is growing tired of seeing his single mother struggle to keep his family afloat, while the local criminal gang extorts protection money from her business. One day he decides to start aping the big guys, and he soon discovers that there is money to be made by doing the Camorra's bidding. Roping his friends in to his plans is an easy job. But as the kids work their way up in the world of organised crime, are they aware of what they are getting into? Are they gaining or losing control?

In this supersized special, Gregg Wallace builds the ultimate big kids' toy, a digger.

A cheetah mother fights to raise her precious cubs, preparing them for life without her.

Andy and Kate are rushing to get their fish wheel ready before the chum salmon run begins. In Kavik, Sue searches for food so she can survive the coming freeze.

Hannah uncovers the technological game changers that have made the smartphone a reality.

Kim and Pierre turn their attentions to harvesting big game; Mike returns home to discover a cabin in much need of repair; Now in Lutsel K'e, Becky tries to sort out her "green" team of sled dogs; Bentley accelerates his winter trapping preparations.

One of 20th century's greatest minds. Einstein created the theory of relativity, a tool to explore and predict the way the universe works - from its very creation to its ultimate demise.

Volcano expert Chris Horsley returns to the Congo to investigate a potentially lethal threat to over two-million people. After a recent eruption, a huge 10-mile-long fracture has appeared in the ground. It runs directly from the slopes of Nyiragongo volcano down to lake Kivu.

From a vineyard that has been making one of Britain's favourite tipples - Port - travel down the line that once transported it to the city that gave it its name: Porto.

Andy and Kate are rushing to get their fish wheel ready before the chum salmon run begins. In Kavik, Sue searches for food so she can survive the coming freeze.

Hannah uncovers the technological game changers that have made the smartphone a reality.

Kim and Pierre turn their attentions to harvesting big game; Mike returns home to discover a cabin in much need of repair; Now in Lutsel K'e, Becky tries to sort out her "green" team of sled dogs; Bentley accelerates his winter trapping preparations.

One of 20th century's greatest minds. Einstein created the theory of relativity, a tool to explore and predict the way the universe works - from its very creation to its ultimate demise.

Volcano expert Chris Horsley returns to the Congo to investigate a potentially lethal threat to over two-million people. After a recent eruption, a huge 10-mile-long fracture has appeared in the ground. It runs directly from the slopes of Nyiragongo volcano down to lake Kivu.

Andy and Kate are rushing to get their fish wheel ready before the chum salmon run begins. In Kavik, Sue searches for food so she can survive the coming freeze.

To film the entire breeding cycle of the Adelie penguin, Frozen Planet sent a team to one of the world's largest colonies at Cape Crozier, Antarctica. Cameraman Mark Smith and Director Jeff Wilson spent four months living amongst the penguins.

See how CGI imagery, the latest scientific research and archive footage created the series. In this episode: looking at the sun.

Hannah uncovers the technological game changers that have made the smartphone a reality.

On the hunt for a steady supply of dog food, Becky and family establish a "Fish Camp" on the shores of Great Slave Lake. In search of an elusive Caribou herd, new comer Jon Grenier ventures into the wilds of Northern Quebec, and Bentley Kakekayash embarks on an early season moose hunt.

Naples. 15-year-old Nicola is growing tired of seeing his single mother struggle to keep his family afloat, while the local criminal gang extorts protection money from her business. One day he decides to start aping the big guys, and he soon discovers that there is money to be made by doing the Camorra's bidding. Roping his friends in to his plans is an easy job. But as the kids work their way up in the world of organised crime, are they aware of what they are getting into? Are they gaining or losing control?

In this supersized special, Gregg Wallace builds the ultimate big kids' toy, a digger.

A cheetah mother fights to raise her precious cubs, preparing them for life without her.

We re celebrating Italy and following the Neapolitan Line. Travelling west from the gelato shops of the seaside town of Pescara, we cross Italy through the wild Apennine Mountains.

The end of the thaw provides Alaskans a brief respite before winter's fury is unleashed. In Iliamna, Erik and Martha aim to load up on salmon before they return to Wiseman for the dark winter.

On the hunt for a steady supply of dog food, Becky and family establish a "Fish Camp" on the shores of Great Slave Lake. In search of an elusive Caribou herd, new comer Jon Grenier ventures into the wilds of Northern Quebec, and Bentley Kakekayash embarks on an early season moose hunt.

Naples. 15-year-old Nicola is growing tired of seeing his single mother struggle to keep his family afloat, while the local criminal gang extorts protection money from her business. One day he decides to start aping the big guys, and he soon discovers that there is money to be made by doing the Camorra's bidding. Roping his friends in to his plans is an easy job. But as the kids work their way up in the world of organised crime, are they aware of what they are getting into? Are they gaining or losing control?

In this supersized special, Gregg Wallace builds the ultimate big kids' toy, a digger.

A cheetah mother fights to raise her precious cubs, preparing them for life without her.

After losing a cache of winter meat last season, Kim and Pierre look to the land for a source of emergency food. Bentley and his wife Felica explore Schade Lake, hunting for early season beaver, and in his on-going quest to pad his winter larder Jon takes to the sea in search of seal.

Becky struggles to secure a steady supply of winter water; Kim and Pierre turn their attention to harvesting big game; Jon looks to the land for some much-needed supplies; Bentley cruises the waters of Schade Lake.

Starting from one of the world's most remote cities, Walvis Bay, in Namibia, we roll 1,500 miles through the Kalahari desert to Pretoria, South Africa's Executive Capital.

Incredible facts and myths about the animal kingdom are put to the test. This time... Is it true that an electric eel can kill you?

Gregg gets special access to learn how the ultimate train is made: a huge 187-tonne, five-carriage electric train. Meanwhile, Cherry Healey visits an HS2 construction site to learn how two huge tunnel boring machines are digging ten miles through the hills. And historian Ruth Goodman is energised by the history of electric trains.

As a young rival emerges, a spotted hyena queen struggles to keep her grip on power.

The entire Hailstone family goes caribou hunting in Noorvik, hoping to find enough meat for the winter. Meanwhile in Kavik, a bear threatens Sue's clients.

Justin Rowlatt investigates a year of wild weather and hears how freak events are becoming increasingly commonplace, changing life right now for millions.

Joanna returns to her birthplace, India, starting in the majestic ancient city of Hampi, in search of a kitchen cupboard staple once known as 'black gold'

Ade sees the damage that climate change is causing, and finds out how we can fight it - and whether eating sea urchin gonads will help.

Michael investigates the health benefits of turmeric and the effects of mindfulness on the brain. Chris investigates whether glucosamine can help relieve joint pain. Gabriel looks into HRT.