Why were most of the cyclists in this photo wearing masks in November 1977? Was it to avoid breathing polluted air?
If so, thank goodness we have the EPA now; I hope we can address modern threats to air quality, like climate change related wildfires, rather than giving up and letting the air become difficult to breathe again.
@skyfaller The air was definitely wildly filthy in the '70s, and riding in traffic could truly make you sick. At the same time, I don't ever recall seeing a cyclist wearing a mask, so it makes me wonder what's up.