Isn’t it a total hassle to buy an air purifier in China, especially for expats? Back in places like the USA, when we shop for anything we can luxuriously research using consumer magazines and other review sources, wisely shopping around… Read the rest
Update January 2016: My data below speaks for itself, but people should be aware of possible quality problems reported here.
I think I’m done testing air purifiers. Yes, I’ve said this before, and I admit I often enjoy crunching… Read the rest
UPDATE January 4, 2016: Here’s a great review article about PM2.5 monitors: click here; they praise the Laser Egg but also discuss its limitations.
I’ve mentioned often that I feel it’s important for people who use air … Read the rest
The following is a reprint of a letter from Dr. C. Arden Pope III addressing the recent controversy whether Beijing’s daily air pollution exposure PM2.5 is equivalent to 1/6 of a cigarette (my 2013 estimate, which you can read here… Read the rest
Just when I was getting hopeful about the dramatic improvement this year in Beijing’s PM2.5 levels, along comes a summer deluge of local press coverage about what they’re claiming is air pollution’s number two threat:… Read the rest