U&Eden +1 Saturday

Tim Dunn heads underground at the magnificent Victorian Bramhope Tunnel in West Yorkshire, one of the longest tunnels in Britain when it was built

The naturalist investigates whether animals and plants have developed an awareness of mathematics, including bamboos that flower exactly the same around the world

A chance to buy goods from the comfort of home

David Attenborough swims alongside sea otters and manatees, and observes the mating habits of the blue whale, which left dry land millions of years ago to return to the seas

David Attenborough profiles the tree-dwellers of the animal kingdom, as primates and squirrels perform complicated manoeuvres in the world's forests

David Attenborough looks at vibrantly coloured monkeys in Venezuela, Costa Rica and West Africa, encountering the red howler, capuchin, guenon and gelada primates

David Attenborough explores the startling similarities between humans and great apes, and meets an orang-utan able to row boats and wash clothes

David Attenborough focuses on fish, the most diverse vertebrates on the planet, exploring the courtship of sea dragons and the climbing methods employed by gobies

The focus turns to birds, revealing the role of their feathers in attracting partners and the challenges they face during the nesting season

David Attenborough swims alongside sea otters and manatees, and observes the mating habits of the blue whale, which left dry land millions of years ago to return to the seas

David Attenborough profiles the tree-dwellers of the animal kingdom, as primates and squirrels perform complicated manoeuvres in the world's forests

David Attenborough looks at vibrantly coloured monkeys in Venezuela, Costa Rica and West Africa, encountering the red howler, capuchin, guenon and gelada primates

David Attenborough explores the startling similarities between humans and great apes, and meets an orang-utan able to row boats and wash clothes

David Attenborough focuses on fish, the most diverse vertebrates on the planet, exploring the courtship of sea dragons and the climbing methods employed by gobies

The focus turns to birds, revealing the role of their feathers in attracting partners and the challenges they face during the nesting season

The story of the world-class teams behind five expeditions. From the remote Arctic wilderness to flooded caves of Mexico their expertise are key

The camerawork and complex logistics that made filming the incredible expeditions possible, bringing the epic journeys to the TV screen

A look at the moments that nearly stopped the Expedition teams in their tracks, to the points where taking one step further meant no turning back

Bourdain enjoys a meal at Don Carlito's, where he indulges in Argentine beef. He also watches an after-hours soccer match and gets psychoanalyzed

Bourdain explores the Brazilian heartland, home to baroque architecture, lush hillsides and cuisine that includes broiled chicken served in a sauce made using its own blood

David Attenborough swims alongside sea otters and manatees, and observes the mating habits of the blue whale, which left dry land millions of years ago to return to the seas

David Attenborough profiles the tree-dwellers of the animal kingdom, as primates and squirrels perform complicated manoeuvres in the world's forests

David Attenborough looks at vibrantly coloured monkeys in Venezuela, Costa Rica and West Africa, encountering the red howler, capuchin, guenon and gelada primates

David Attenborough explores the startling similarities between humans and great apes, and meets an orang-utan able to row boats and wash clothes