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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

Greening the Green Belt

Tom Heap asks if the green belt surrounding UK cities is really green or pleasant.

• 30 mins

Lava: A Dangerous Game

Tom Heap meets the scientists trying to lessen the impact of volcanic eruptions.

• 30 mins

The Price of Cheap Oil

Tom Heap asks what the falling price of oil means for the environment.

• 30 mins

Climate Change: Inconvenient Facts?

With Antarctic sea ice growing, Tom Heap asks what is happening to the climate.

• 30 mins

Reds Return

Could the revival of the pine marten be bad news for grey squirrels and good for the reds?

• 30 mins

Cycle City

Tom Heap saddles up to find out if Britain is really about to become a nation of cyclists.

• 30 mins

Eco-Cities

Tom Heap investigates whether eco-cities are living up to their promise.

• 30 mins

China's Water Revolution

China needs more water urgently. Isabel Hilton examines the nation's options.

• 30 mins

Britain's Environment: The Debate

How will the next government tackle Britain's environmental problems? Tom Heap reports.

• 30 mins

The Ozone Hole Thirty Years On

Peter Gibbs finds out if the ozone layer hole is healing 30 years on from its discovery.

• 30 mins

Electric Island

Tom Heap visits the Scottish island that can power itself.

• 30 mins

Sounds of the Seas

How noisy is the underwater environment? Tom Heap dips beneath the surface to find out.

• 30 mins

Britain Rules the Waves

Can Britain save the oceans by protecting its overseas territories? Tom Heap reports.

• 28 mins

Oceans of Acid

Professor Alice Roberts asks how ocean acidification will alter sea life.

• 30 mins

Where Have All Our Gardens Gone?

Urban Britain is paving over its front gardens. Jheni Osman discovers the impact.

• 30 mins