Bristol is Europe's Green Capital for 2015. Tom Heap finds out what that means.
Iceland is warming faster than most countries. Tom Heap finds out why.
Australia has big plans to develop the Northern Territory. Julian Rush reports.
The melting sea ice of the Arctic creates opportunities and threats. Tom Heap reports.
Tom Heap investigates the theft and smuggling of rare flowers and its impact.
Tom Heap meets a man who can turn dirty water into clean, drinkable water.
Cleaning the seabed, one dive at a time. Miranda Krestovnikoff joins a new clean-up squad.
Tom Heap discovers how the islands of the Caribbean are preparing for rising sea levels.
Tom Heap visits communities living with the shale gas industry, from Texas to Lancashire.
Tom Heap finds out how communities large and small can produce their own electricity.