After years of intensive research and deliberations with experts across the globe, the World Health Organization (WHO) updated its 2005 Global Air Quality Guidelines
(AQG) in September 2021 (WHO 2021; WHO 2017)…
![](https://siaaic.org/wp-content/uploads/2023/03/siaaic_200x98.png)
After years of intensive research and deliberations with experts across the globe, the World Health Organization (WHO) updated its 2005 Global Air Quality Guidelines
(AQG) in September 2021 (WHO 2021; WHO 2017)…