[BizarreByte]

> Having lived next to a semi-main street through a smallish California coastal city without much rain it is pretty eye opening how much black dirt and junk just coat everything next to the road.

One day I made the mistake of leaning against the wall in a TTC subway station while in a white shirt. I didn't realize how much oil, brake dust, and other mechanical grime there was until that moment.

I had to go home and change.

[MichaelZuo]

I think some research group did measurements of the AQI in the TTC stations and found the average air quality in the winter was actually comparable with the smog in LA or Beijing.

[Scoundreller]

and people still look at me funny when I wear a mask in there

I wonder what platform doors will do: the stations depend on piston effect for ventilation, but walling off the tube from the station might keep it more in the tube?

[late2part]

"boot the grime of this world in the crotch, dear!"