Chris Packham, Liz Bonnin and Steve Backshall explore our oceans and its wildlife, to find out how marine life is coping in the face of increasing environmental pressure. Show more

From colossal farms in America to the destruction of the Amazon, Liz Bonnin investigates how our hunger for meat is killing our planet. Show more

Liz Bonnin sails along the Gloucester and Sharpness Canal, in the company of Chris Witts, who skippered the last commercial grain barge to sail into Gloucester Docks. Show more

Liz Bonnin goes on a journey along the North West coast of England, meeting actor Simon O'Brien and exploring the iconic Midland Hotel. Show more

Liz Bonnin journeys through Gloucestershire. She starts her journey among the trees at Westonbirt's National Aboretum, and ends up inside an inflatable planetarium. Show more

In the final programme of this week-long ocean health check, we find out what the future holds for the next generation of marine life and how we can help. Show more

Liz Bonnin explores the Lake District. She starts her journey in Whinlatter Forest, travels through Keswick, and finishes at a pudding club in Ambleside. Show more

Liz Bonnin rides a horse on Druidston beach and takes to the waters of the Western Cleddau to hear the latest on the dispute between canoeists and anglers in Pembrokeshire. Show more

Liz Bonnin delves in to the world of invention. From the new space race to a nanotech revolution, she reveals some of the technologies set to transform our lives. Show more

In a never-before-attempted experiment at Bristol Zoo, Liz Bonnin and a team of experts stay up all night to track the diverse sleep patterns of animals from lions to meerkats. Show more

From skateboarding dogs to chimp maths geniuses, Liz Bonnin searches for the planet's most intelligent animals, and John Humphrys puts a goldfish through its paces on Mastermind. Show more

The BBC’s favourite wildlife presenters take a trip through the natural history archives, sharing some of their most memorable animal encounters across Africa. Show more

BBC Wildlife presenters look back on their adventures in the frozen regions of the Arctic. Show more

Liz Bonnin travels to a sanctuary in Sierra Leone to witness a lifesaving operation on a chimpanzee. A vet uses techniques from human medicine to diagnose and remove a lump. Show more

In a race to find out what great pressures confront life in our ocean, the team continue their mission to investigate the effect human impact has had on our marine ecosystem. Show more

As marine life around the world embarks on epic journeys across the planet’s oceans, we discover how ocean traffic, over-fishing and noise pollution could have an impact. Show more

Liz Bonnin goes on a journey through West Wales, discovering the story of a medieval Welsh warrior, getting a lesson in navigation and joining a lifeguard demonstration. Show more

Liz Bonnin explores relationships in the animal kingdom and asks whether animals love. Here, she uncovers the weird and wonderful ways that different species attract a mate. Show more

Liz Bonnin investigates how and why zoos keep animals and looks at whether they need to change to keep up with modern science. Show more

Series exploring topical scientific issues. To celebrate its 50th birthday, Horizon invites the public to play a role in tackling the greatest challenges facing science today. Show more