Household waste could be used to top up householders’ gas supplies in the future.

Research by the National Grid says that leftover food and sewage could be used to create ‘biogas’, potentially helping to heat half of Britain’s homes.

But that’s the future – what are green groups on your patch doing now?

Recycling newspapers and cans is considered run-of-the-mill now but what are environmental groups doing that’s a bit different?