HIstory Assistant Professor Greg Whitesides wrote this piece on the Montreal Protocol, “The Little Treaty That Could.” He writes, “Emissions of chlorofluorocarbons (CFCs) and other ozone-depleting substances could have destroyed two-thirds of the stratospheric ozone layer by 2065. Today, however, scientists believe the near-total ban on the production of these chemicals could allow the ozone layer to recover to 1980 levels, although the date of recovery remains uncertain.”

Learning from Success: Lessons in Science and Diplomacy from the Montreal Protocol
Science and Diplomacy, June 2020