I live in Washington, DC and I'm from Cleveland (a place once so polluted that a river caught on fire). I was taken a back by the pollution in Europe on a vacat

I live in Washington, DC and I'm from Cleveland (a place once so polluted that a river caught on fire). I was taken a back by the pollution in Europe on a vacation a few years ago. I had daily coughing fits in Paris. I walk around an American city every day. There is a lot that European cities do better than American ones, but air quality is not one. You can really notice the difference.