Power of waste
Even when you can’t eat it, food can provide energy. Sainbury’s, a supermarket chain in Britain, in July became the country’s first retailer to power a store directly from its waste. Sainsbury’s sends any food from its stores that can’t
Be used by charities or fed to animals to a plant that uses microbes to turn the waste into biomethane gas. The gas is then used to produce electricity. The electricity is sent ot the company’s stores near the waste plant, in western cen-tral England.