Post

Air quality. I grew up in the Los Angeles basin in the 70s and 80s and remember having to stay inside because the smog was so bad - Stage 2 smog alerts, they were called. Apparently they haven't had one of those since 1988. Haven't had a stage one smog alert since 2003.

(Mind you, more wild fires now, impacting air quality. Even so.)

Also in no particular order: TVs, long distance phone calls, bicycle shifting and clipless pedals, tires, outdoor clothing, dishwashers, digital cameras, computers, home construction (esp. insulation&air sealing), dentistry, and electric vehicles (which are amazing!)