Beijing and many cities in China are very polluted. Everyday the pollution PM 2.5 index
goes easily to above 200, 500, or more. (The recommended healthy air by WHO is under
50). School kids are very heavily dangered by this since schools keep opening windows
widely and do outdoor activities (exercises, playing,etc) as usual. Please help to
encourage the Chinese government to make policy that school kids need to wear air
filter mask outside when the index is above 150.
在中国，北京和许多城市都受到了严重的污染。目前每天的PM2.5指数经常在200以上，或者500，甚
至更高。（WHO推荐的健康空气指数是低于50的）。小学生的健康已经受到了严重的威胁，因为学校
还是跟往常一样保持敞开窗户、并且外出运动（做操、玩耍等）。在校的孩子需要带上防毒口罩。