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Alaskans must make use of the frozen trails to secure resources so that they can survive the cold winter months coming their way.

This episode journeys across the planet, from pole to pole, following the influence of the Sun and discovering how its seasonal journey affects the lives of all who live on Earth.

The hosts visit some of the biggest food production units in Britain and share details about the various processes that take place inside these factories.

On his search for some of the most powerful predators, Steve Backshall encounters organisms like a punching shrimp, the world's heaviest eagle, and a dangerous wolf.

Steve goes in search of deadly predators with the greatest senses on Earth. He finds echolocating bats, supersonic whales and a snake that sees its prey in complete darkness.

The spy creatures discover that mischief is rife in nature, but perhaps there are still rules that govern the lives of animals.

Good friends and fellow comedians Ed Byrne and Andy Parsons brave temperatures as low as minus fifty to drive across Siberia's infamous Road of Bones.

Ben meets an old widow who left the urban safety and convenience of Europe in exchange for an isolated camp in the Australian bush.

The hosts discover how the largest cereal factory in Europe produces more than a million boxes of breakfast material each day and distributes them all over the globe.

Twenty seven tonnes of potatoes from a farm are sent to the largest crisp factory on earth where they are peeled, sliced and fried to make more than five million packets in 24 hours.

Rick Stein's continues his culinary journey as he travels down the Mekong River to Vietnam where he tries various night food stalls.

The spy creatures discover that mischief is rife in nature, but perhaps there are still rules that govern the lives of animals.

This episode journeys across the planet, from pole to pole, following the influence of the Sun and discovering how its seasonal journey affects the lives of all who live on Earth.