So... to drop the PM2.5 amount by 15%, this tower must be removing many many tons of particulate matter every day. How is it removed from the filters they speak of? How expensive is that to do? I have some questions about the practicality.
On the other hand, I wonder if anyone's ever built a 100m placebo before. It could be a really interesting university study on the placebo effect in disguise.
On the other hand, I wonder if anyone's ever built a 100m placebo before. It could be a really interesting university study on the placebo effect in disguise.