In the Alps (mountain range) there are a lot of "officially recognised" "Good-Air Health Resorts" (anerkannter Luftkurort). Surely that's a farce nowadays.
These pictures were plucked from German and Austrian Television. They operate a network of remote-controlled cameras, ("Wetterfernsehen" or "Alpenpanorama")which are supposed to show you what the weather is like in case you want to drive you car to into these most beautiful areas.
But the fact is that the smog sits in the valleys and the airpollution reaches heights of over 2000 metres. It is caused almost exclusively by cars. It is predicted that the Alp's glaciers will be gone in a decade or two.
The single most effective (and realistic) measure to rid ourselves of these unhealhty "brown horizons" ... is electric cars.