BBC Earth

With the rivers flowing and the spring thaw, residents of the last frontier head into the wilderness to hunt and gather vital resources.

Gregg Wallace is in Ireland at an enormous liqueurs factory that produces 540,000 bottles a day. He follows the production of cream liqueur from the arrival of maize to make Irish whiskey right through to dispatch of the finished liqueur.

Our journey begins in Anchorage, Alaska, where we board a luxury passenger train. Later, we head north to enter the vast wilderness of Alaska, which is America's largest and remotest state.

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.

Ben journeys to South America to visit Rhona, an actress who left Hollywood to live alone in a remote valley in Uruguay after having become seriously disillusioned with her previous life.

Animals must find somewhere to live, a place that provides shelter from the elements and a refuge from enemies. Good homes are rare and competition can be intense, finding a home is one thing, but defending it is quite another.

Gregg Wallace is in Ireland at an enormous liqueurs factory that produces 540,000 bottles a day. He follows the production of cream liqueur from the arrival of maize to make Irish whiskey right through to dispatch of the finished liqueur.

The Scottish rail journey starts in Kyle of Lochalsh, a tiny fishing village on the far west coast, and continues east across the breathtaking Highlands, before turning south towards Aberdeen.

Alaskans get a brief respite from winter's fury with the end of the thaw.

Ben visits Bette in the wilds of northern Queensland, where she's been dealing with snakes, floods and isolation since moving to the harsh Australian wilderness thirty years ago.

Sir David Attenborough examines how animals try to gain a position of power in their worlds. The most powerful have the best access to food and water, and they are also the most attractive to the opposite sex.

Gregg Wallace is in France at an enormous foundry where they produce a cast iron pot every five seconds. He follows production of casserole dishes from the arrival of 20 tonnes of crude iron right through to brightly coloured orange pots.

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

The Hailstones pull together to build a footbridge. Meanwhile, Jessie goes fishing while looking out for some good spruce trees and Ricko has his children over to stay plus an extra surprise guest.

Native Italian Annalisa is developing a forest hideaway on the fringes of society.

NASA's SLS is the most powerful rocket ever built, capable of sending astronauts to Mars and beyond. The first un-crewed mission around the Moon, in March 2022, will be a giant leap forward for human deep-space exploration.

The investigators attempt to discover the killer of an infamous Pharaoh and under the secret behind the death of a dynasty.

The Scottish rail journey starts in Kyle of Lochalsh, a tiny fishing village on the far west coast, and continues east across the breathtaking Highlands, before turning south towards Aberdeen.

The Hailstones pull together to build a footbridge. Meanwhile, Jessie goes fishing while looking out for some good spruce trees and Ricko has his children over to stay plus an extra surprise guest.

Native Italian Annalisa is developing a forest hideaway on the fringes of society.

NASA's SLS is the most powerful rocket ever built, capable of sending astronauts to Mars and beyond. The first un-crewed mission around the Moon, in March 2022, will be a giant leap forward for human deep-space exploration.

The investigators attempt to discover the killer of an infamous Pharaoh and under the secret behind the death of a dynasty.

The Scottish rail journey starts in Kyle of Lochalsh, a tiny fishing village on the far west coast, and continues east across the breathtaking Highlands, before turning south towards Aberdeen.