The Secret Science of Sewage | Horizon

Fashion's Dirty Secrets | Stacey Dooley

Stacey Dooley uncovers the shocking environmental impact caused by an insatiable appetite for cheap clothing.

03: Food, Fire and Water | Supersized Earth

Dallas Campbell examines what it takes to keep seven billion humans alive with food, energy and water.

Amazon deforestation | Meat: A Threat to Our Planet?

Liz Bonnin witnesses the devastation of the Amazon rainforest from the sky.

Episode 1 | Planet Oil: The Treasure That Conquered The World

From the moment we first drilled for oil, we opened a Pandora's box that changed the world forever. It transfor...

Meat: A Threat to Our Planet?

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

Energy | Bang Goes The Theory

Jem Stansfield, Liz Bonnin and Maggie Philbin investigate how close Britain might get to running out of electricity.

Episode 1 | Hugh's War on Waste

Hugh Fearnley-Whittingstall wants to find out why the UK wastes so much food. He challenges supermarkets to drastically reduce the amount of ...

Fracking: The New Energy Rush | Horizon

Iain Stewart investigates a controversial energy rush for the natural gas found deep underground, sometimes right under the places pe...

03: Laying the Foundations | Building the Olympic Dream

With nine billion pounds to spend on creating an Olympic Park, London 2012's bosses face some big challenges.

Episode 2 | War on Plastic with Hugh and Anita

Hugh and Anita's attempts to solve our plastic problems continue. Anita tackles bathroom plastics whilst Hugh learns that micr...

Fruit and Veg | What Britain Buys and Sells in a Day

Ed Balls, Ade Adepitan and Cherry Healey delve into the hectic world of Britain's imports and exports. Ed is at London G...

Episode 1 | Future of Food

George Alagiah travels the world to reveal a growing global food crisis. He investigates population growth, climate change, water shortages and wh...

Episode 1 | Thames Water: Inside the Crisis

With exclusive access inside Thames Water, this is the story of Britain’s most beleaguered water company as it battles for surviv...

Episode 2 | Planet Oil: The Treasure That Conquered The World

Professor Iain Stewart looks back at the 1950s, a time when the oil and gas fields of the Middle East became a ...

The Coffee Trail with Simon Reeve | This World

Simon Reeve heads to Vietnam to uncover the stories behind the morning pick-me-up. He travels to the central highlands, where ...

Crop to Shop: Jimmy's Supermarket Secrets

Jimmy Doherty explores the global logistics that bring fresh food from around the world to a shop near you, and uncovers the scienc...

Greenhouse effect | Making Scotland's Landscape

An experiment that demonstrates the greenhouse effect.

Svalbard | Scandinavia with Simon Reeve

Simon Reeve explores Svalbard and its mineral resources and how this causes diplomatic tension for the primed real estate.

Why are we Still Searching for Fossil Fuels? | Panorama

Richard Bilton investigates why oil, coal and gas exploration is booming when almost every country in the world has c...

04: Wind | Powering Britain

Keeley Donovan heads 75 miles off the Yorkshire coast to see the building of Hornsea One, which is currently the world's biggest offshore windfarm.