Purification Process and Cryogenic Distillation

Landfill sites are an icon of our wasteful society and the harm we cause to Planet Earth.

But around the world, people are trying to make these filthy places a little bit better.

We visit the human-built island in Singapore made of burned waste that has become a thriving ecosystem.

And in France, we hear how gas leaking from landfill sites is being collected as a source of energy.

Presenter: Myra Anubi Reporter/producer: Claire Bowes Singapore reporter:Tessa Wong Series Producer: Jon Bithrey Editor: Bridget Harney Sound mix: Annie Gardiner

email: peoplefixingtheworld@bbc.co.uk

(Image: Semakau island, Singapore National Environment Agency)