Can't speak for anyone else, but I cared about pollution as theory for decades. Even as a child when I had to wait near the idling busses I could sense an innat

Can't speak for anyone else, but I cared about pollution as theory for decades. Even as a child when I had to wait near the idling busses I could sense an innate revulsion at whatever I was inhaling. Maybe what's happening is that after an unfortunately long delay, society is finally coming around to a long overdue conclusion. Some phenomena seem to flip from "absurd" to "obvious" very quickly (gay-marriage, marijuana) once they get a certain critical mass.