Walking to the shops ‘damages planet more than going by car’ - Times Online

Walking to the shops ‘damages planet more than going by car’ - Times Online: "Walking does more than driving to cause global warming, a leading environmentalist has calculated. Food production is now so energy-intensive that more carbon is emitted providing a person with enough calories to walk to the shops than a car would emit over the same distance. The climate could benefit if people avoided exercise, ate less and became couch potatoes. "