“Under the Dome” is a great documentary about PM2.5 by Chai Jing, a Chinese journalist.
Most people underestimate the effects of PM2.5. One of the reasons is, they don’t use the five senses to make decisions. Most of them overestimate their visual sense. For example, when they see smog, they think it is just clouds and stop thinking.
There are many organizations which warn about the effects of PM2.5 and evaluate the effects of PM2.5 appropriately. It is worth your time to check the American Heart Association, the European Heart Association and the WHO website.
We underestimate our respiratory system and overestimate our brain. But we cannot live without inhaling and exhaling. Please check “Under the Dome” and take it seriously. It is happening now in many places around the world.