China is a `` poster boy '' for environmental degradation . President Garcetti recently took a swipe at Los Angeles ' 's bad air . Beijing battle with air pollution could hold lessons for China , says city 's mayor . `` Kids were kept from playing outside . LA says Beijing can tackle smog without sacrificing growth .
China is a `` poster boy '' for environmental degradation . President Garcetti recently took a swipe at Los Angeles ' 's bad air . Beijing battle with air pollution could hold lessons for China , says city 's mayor . LA says Beijing can tackle smog without sacrificing growth .