Lead emission from factories and the natural environment in…Guangdong has poisoned 160 children, Xinhua said…Children…were found to have "elevated" levels of lead in their blood after inhaling lead-contaminated air and eating food tainted with lead…Lead…can impede learning and affect behaviours. To counter widespread public anger, Beijing has promised to crack down…An industry body said…China could shut three quarters of lead-acid battery plants in the next two or three years…China is the world's largest consumer of refined lead…Lead poisoning builds up through regular exposure to small amounts of lead and damages the nervous and reproductive systems, kidneys, as well as causing high blood pressure and anaemia. In 2009, protesters broke into one smelting plant…smashing trucks and tearing down fences…