Peter Hadfield meets Huang Ming, the undisputed leader of China's booming solar industry.
How should we eat to reduce our carbon footprint? Four experts debate very different ideas
How the fallout from Chernobyl changed Germany forever. Julian Rush reports.
Peter Gibbs explores Ascension Island, a barren Atlantic rock made fertile by man.
Professor Alice Roberts asks if archaeology can help us understand climate change.
Tom Heap finds out how Iceland could solve Britain's energy crisis.
Tom Heap examines the wildlife impact of Europe's new borders.
How do you persuade a throwaway society to use a bin? Chris Ledgard on litter campaigns.
Tom Heap examines the potential impact of an exit from the EU on the environment.
Tom Heap visits New York to find out how the city is cleaning up its dirty waterways.