Should pollution abatement investment be relatively low in places where pollution levels are high?
The evidence is mounting that what you can’t see can kill you. What you can’t see are the tiny particles in the air you’re breathing (unless you are reading this blog through an electron microscope). Really tiny particulate matter measuring less than 2.5 micrometers (about 1/30th the diameter of a human hair) is the most pernicious because it can work its way deep into your lungs and circulatory system. Research has linked exposure to these particles, also known as PM2.5, to a range of outcomes you don’t want to mess with, including asthma, acute bronchitis, lung cancer, stroke, and heart disease.
Concentrations of PM2.5 are increasingly being monitored around the world. More monitors and better data are helping us develop a clearer picture of who’s being exposed to how much. As the evidence piles up, we’re…
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