NEW : Beijing recording `` hazardous '' levels of air pollution Monday . European Commission figures show that China produced 9.7 million kilotons of carbon dioxide while the United States had 5.42 million kilotons in 2011 , the latest available numbers . NEW : Children in worst-hit areas ordered to stop outdoor sports activities . Comment: U.S. Embassy in Beijing records an index of more than 700 micrograms Sunday .
NEW : Beijing recording `` hazardous '' levels of air pollution Monday . NEW : Children in worst-hit areas ordered to stop outdoor sports activities . Comment: U.S. Embassy in Beijing records an index of more than 700 micrograms Sunday .