Lynn L. Bergeson, “The Montreal Protocol is Amended and Strengthened,” Environmental Quality Management, Spring 2017.

Climate change watchers know that October, 15, 2016, was a historic day for international climate action. On that day, nearly 200 countries reached an agreement to phase down use of hydrofluorocarbons (HFCs) at the 28th Meeting of the Parties to the Montreal Protocol in Kigali, Rwanda. The meeting to discuss the Amendment took place from July 15-23, 2016. This seemingly impossible alignment of international interests reflects years of effort. This column summarizes this historic event and its implications.