Re PM2.5 中國在北京的空氣質量 CHINA's AIR QUALITY in BEIJING "PM2.5 Most Chinese were unaware of PM2.5 until about half a month ago, but the air quality measurement soon became a hot word online Data released by the US Embassy in China showed the PM2.5 index in Beijing was 522 on Dec 4, topping the maximum 500. Meanwhile, Beijing Municipal Environmental Protection Bureau said it was “light pollution” that day But seeing is believing and the heavy smog that blanketed Beijing caused many to question the official version. "One may be poisoned without taking anything but air" becam http://usa.chinadaily.com.cn/china/2011-12/12/content_14253389.htm

Re PM2.5 中國在北京的空氣質量 CHINA's AIR QUALITY in BEIJING "PM2.5 Most Chinese were unaware of PM2.5 until about half a month ago, but the air quality measurement soon became a hot word online Data released by the US Embassy in China showed the PM2.5 index in Beijing was 522 on Dec 4, topping the maximum 500. Meanwhile, Beijing Municipal Environmental Protection Bureau said it was “light pollution” that day But seeing is believing and the heavy smog that blanketed Beijing caused many to question the official version. "One may be poisoned without taking anything but air" becam
http://usa.chinadaily.com.cn/china/2011-12/12/content_14253389.htm