Tropospheric R-134a has grown faster than the S&P 500. (It's a early-stage startup pollutant, which IPO'd relatively recently, after the Montreal Protocol). ht

Tropospheric R-134a has grown faster than the S&P 500. (It's a early-stage startup pollutant, which IPO'd relatively recently, after the Montreal Protocol). https://en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane https://en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane