I think people just a little bit younger than me don't realize just how much we fucked things up environmentally, in very visible ways (smog, acid rain, toxic rivers, ...), and then... actually managed improved things. Air quality isn't perfect everywhere all the time now, of course, but oppressive smog was standard "everywhere," and not just in the places of legend like Los Angeles.
No real point, except The Kids Today don't remember the smog!!!
