“HFCs have only been used in appliances since the 1990s, as a replacement for ozone-depleting chemicals, but their use has grown at a terrifying rate. While HFCs still only comprise about 1 percent of total greenhouse emissions, they are thousands of times better at trapping heat than carbon over a 20-year period.”
“another big task awaits for President Joe Biden to rein in HFCs: ratifying the 2016 Kigali Amendment, the global agreement to phase down these dangerous chemicals by 85 percent before 2050. It’s one of many amendments that has been added to the Montreal Protocol since 1987, a treaty that has been used to phase out ozone-depleting chemicals.
Every one of these amendments was ratified and implemented successfully by the US —except Kigali, the one that came along just as Trump and Republicans took power and brought climate action to a standstill.”