廚餘
Food waste is generally considered to have a damaging effect on the environment; a reduction in food waste is considered critical if the UK is to meet obligations under the European Landfill Directive to reduce biodegradable waste going to landfill and favourable considering international targets on climate change, limiting greenhouse gas emissions. When disposed of in landfill, food waste releases methane, a relatively damaging greenhouse gas, and leachate, a toxin capable of considerable groundwater pollution. The food supply chain accounts for a fifth of UK carbon emissions; the production, storage and transportation of food to homes requires large amounts of energy. The effects of stopping food waste that can potentially be prevented has been likened to removing one in five cars from UK roads.