The Best Climate Agreement Was the Treaty to Protect the Ozone Layer

Lasting Lessons Include the Benefits of Flexibility and a Culture of Cooperation

The 28th Meeting of the Parties to the Montreal Protocol in October 2016 where the Kigali Amendment to reduce emissions of HFCs was adopted. Photo credit: IISD/ENB

The 1987 Montreal Protocol on Substances that Deplete the Ozone Layer is justifiably celebrated as the basis for the near universal adoption of measures to phase out ozone-depleting chemicals. While not emphasized…