By coincidence, we just discussed protection of the stratospheric ozone layers in my environmental law course this week when I saw the obituary for Dr. Mario Molina yesterday, a Mexican-American scientist. His research on damage to the ozone layer by CFCs and other ozone depleting chemicals was awarded a Nobel Prize and eventually prompted the negotiation of the Ozone Treaties (Vienna Convention and Montreal Protocol). These agreements have become among the most successful international environmental treaties to date and continue to serve as models for modern environmental treaty-making. In his later days, he used his role to speak out on these broader environmental policy issues, including in the context of climate change. What a loss.