history-earth-and-sustainability
green-wins
+3
Feb 28, 2026
•
5 min read
On September 16, 1987, representatives from 24 nations gathered in Montreal, Canada, to sign the most successful environmental treaty in history.
![[History: Earth & Sustainability] The Day the World Saved Its Own Sky: The Montreal Protocol of 1987](https://media.beehiiv.com/cdn-cgi/image/format=auto,width=720,fit=scale-down,onerror=redirect/uploads/asset/file/0e188003-2d89-49d6-b2c7-2eae4e053f89/c3e11d66-67dd-459f-9920-1aca81ebd20f.jpg)
