Tom Heap investigates the real potential of fusion power.
We need to build new homes and schools on ex-industrial land, but how safe is it?
Could it be time to put an end to our pets? Alice Roberts asks if Fido can ever be green.
Alice Roberts investigates the threats posed to our great historic sites by climate change
Our goods need to be delivered, but at what cost? Tom Heap goes trucking to find out.
Alice Roberts meets the people making Britain's wasteland grow.
Tom Heap on the prospects for the United Nations' crucial climate change conference.
Can technology remove the guilt from flight? Tom Heap and Bruce Dickinson investigate.
Tom Heap finds out if eco-activists are facing their toughest challenges yet.
Are charity mountaineers damaging our highest peaks? Alice Roberts reports.