WHO Updates Air Quality Guidelines, But Are They Safe?

After over 16 years of no updates, the World Health Organization (WHO) finally updated its air quality guidelines including its recommended limits for one of the world’s biggest killers, PM2.5 air pollution. The WHO lowered their recommended annual limit of PM2.5 pollution by half, from 10 micrograms to 5 micrograms.  … Read more

How’s the Air in Nepal?

A user on Quora asked recently how bad the air pollution in Nepal is. Nepal has glorious mountains and shining temples. But how is the air? I checked the World Health Organization’s global PM2.5 database. According to that database, Kathmandu’s PM2.5 particulate pollution averaged 49 micrograms/m3 in 2013:     … Read more

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