Carbon-neutral operation housed in WWII air-raid shelter
                                
                                
                                    (Newser) -
                                    A pair of Londoners have taken up farming in the city—about 100 feet underground. Their business, supported by TV chef Michel Roux Jr., uses a former air raid shelter from World War II as a place to grow vegetables and herbs. The project, called  Growing Underground , spreads across about...