WHO Air Quality Guidelines: Moving Indoors

& Resisting the temptation succumbed to by previous committees to stop at the stage of proposing standard exposure-response functions when faced with pollutants without clear thresholds, the AQG expert group stated the new AQGs in terms of actual concentration levels that provide clear guidance to policy; & Accommodating the challenge posed by creating “global” AQGs in the face of large differences in current pollution levels around the world,...