With the PM2.5 spiking up above 400 (groan), it looks like the brief but beautiful autumn weather might be over in Beijing. Residents strapped on their masks and dusted-off their air purifiers this week, as a thick, yellow blanket of smog descended on the city. And this is only the beginning: winter is the worst time for Beijing air quality.
Breathing Beijing’s filthy air is enough to send any scientist to the drawing-board, and with the government’s willingness to fund, several inventors have come up with pretty wacky projects to tackle the problem. Here are some of the strangest ideas on offer:
PM2.5 readings in Hebei province have reached 500 micrograms per cubic meter in the northern province of Hebei, and have been hovering above 300 in nearby Beijing. More at China Digital Times.