Business & Policy Environmental Policy Time Lapse Video of Smog Moving Into Beijing Will Take Your Breath Away By Lloyd Alter Design Editor University of Toronto Lloyd Alter is Design Editor for Treehugger and teaches Sustainable Design at Ryerson University in Toronto. our editorial process Facebook Facebook Twitter Twitter Lloyd Alter Updated October 11, 2018 CC BY-ND 3.0. Mummyyx/Wikimedia Commons Share Twitter Pinterest Email Business & Policy Corporate Responsibility Environmental Policy Economics Food Issues Chas Pope, a Briton working for ARUP in Beijing, posted this on Twitter yesterday, January 1: Real Time Air Quality Index/Screen captureA look at the Real Time Air Quality Index There is a big bump in the PM10 index just about at the time the video has been shot, where I have added the arrow. Perhaps this is how one will soon have to dress to go outside for a run, or even a walk: