PM 2.5 The Invisible Toxic Dust More Dangerous Than You Think
PM 2.5 refers to fine particulate matter with a diameter of 2.5 microns or smaller—about 20 times smaller than a human hair. These particles can remain suspended in the air, penetrate deep into the respiratory system, and even enter the bloodstream. The primary sources of PM2.5 include: Vehicle exhaust emissions Industrial activities...

