Plants, like humans like to pick and choose who they hang around with. They all want their own bit of space and to achieve this some plants release a toxin through their roots directly into the soil which inhibits the growth of competing plants as Mike Thurlow reports.

A 25-year partnership between Suffolk County Council and Suez is turning the county’s household waste into energy. The site can treat 269,000 tonnes of waste a year, which generate enough electricity to power more than 30,000 homes. Ken Crowther took a tour of the site with Emily Pike to find out more.