A Toilet for the 21st Century

2.5 billion people on the planet have no sanitation so how do we give toilets to everyone?

• 30 mins

Britain Under Water

The fight back against the flood waters starts here. Tom Heap reports.

• 30 mins

A Greener Way to Go

Do you try to lead a greener life? Tom Heap investigates how to have the greenest death.

• 30 mins

Nuclear Waste's Final Destination

Nuclear power is back on the UK's agenda, but radioactive waste remains the problem.

• 30 mins

Future-proofing Forests

Julian Rush asks what is being done to protect UK forests from diseases like ash dieback.

• 30 mins

Feeding the Crops of the Future

Tom Heap investigates whether we're running out of phosphorus, an element vital for life.

• 30 mins

Britain's Green Capital 2015

In 2015 Bristol will be European Green Capital. We discover exactly what that means.

• 30 mins

A Resilient World?

A panel of climate experts debates how we will have to adapt in the face of climate change

• 30 mins

Flight from Disaster

Can nature heal itself? Julian Rush reports on the aftermath of an environmental disaster.

• 30 mins

Living It Small

Tom Heap squeezes into micro-homes to see if living compactly has environmental answers.

• 30 mins

Power of Scotland

How would an independent Scotland power itself? Tom Heap investigates.

• 30 mins

Chemical Weapons: 100 Years On

Tom Heap finds out how Syria's chemical weapons are going to be disposed of.

• 30 mins

The Future of Our Food

Where will our food come from in the future? Tom Heap chairs the debate.

• 30 mins

Energy Storage

Tom Heap explores the innovative ways to store energy rather than let it go to waste.

• 30 mins

Britain's Overseas Wildlife

Britain's Overseas Territories are a treasure trove of wildlife. Tom Heap reports.

• 30 mins

The Diesel Decade

How the rise in diesel cars may have damaged our health. Tom Heap investigates.

• 30 mins

Texan Drought

Tom Heap explores how four years of drought is changing the face of Texas.

• 30 mins

When Mosquitoes Attack!

Jheni Osman is on the front line against invading mosquitoes and new disease threats.

• 30 mins

El Nino: Driving the Planet's Weather

Weatherman Peter Gibbs investigates the global impact of the weather phenomenon El Nino.

• 30 mins

Power to the People

Tom Heap finds out how communities large and small can produce their own electricity.

• 30 mins

A Decade of Fracking

Tom Heap visits communities living with the shale gas industry, from Texas to Lancashire.

• 30 mins

Saving the Caribbean

Tom Heap discovers how the islands of the Caribbean are preparing for rising sea levels.

• 30 mins

Scuba Squad: Cleaning the Ocean

Cleaning the seabed, one dive at a time. Miranda Krestovnikoff joins a new clean-up squad.

• 30 mins

Making a Splash

Tom Heap meets a man who can turn dirty water into clean, drinkable water.

• 30 mins

Where Have All the Flowers Gone?

Tom Heap investigates the theft and smuggling of rare flowers and its impact.

• 30 mins

Arctic Future

The melting sea ice of the Arctic creates opportunities and threats. Tom Heap reports.

• 30 mins

Taming Australia

Australia has big plans to develop the Northern Territory. Julian Rush reports.

• 30 mins

The Ice in Iceland

Iceland is warming faster than most countries. Tom Heap finds out why.

• 30 mins

Bristol: Green Capital?

Bristol is Europe's Green Capital for 2015. Tom Heap finds out what that means.

• 30 mins

Hunting the Beefalo

Tom Heap goes in search of the hybrid beefalo, which is damaging the Grand Canyon.

• 30 mins