1987 Montreal Protocol messed up significantly by introduci…

1987 Montreal Protocol messed up significantly by introducing HFCs due to “Ozone hole emergency”. The 2019 Kigali Amendment to Montreal Protocol bans HFCs because global warming. ftp://ftp.cmdl.noaa.gov/hats/papers/montzka/2012_pubs/Montzka_ASHRAE_2012.pdf