In this issue: 1. Kigali Amendment latest ratification 2. Global cooperation to protect the ozone layer can ensure a better future for us all 3. While the ozone layer is healing, pitfalls remain 4. Scientific article suggesting new metric to measure ozone layer recovery 5. Know the Rules, specific uses of controlled substances 6. How the Montreal Protocol helped save the climate 7. Does turning the air conditioning off when you’re not home actually save energy? Three engineers run the numbers 8. Sustainable cold chains: Virtual Exhibition 9. Sustainable cooling from around the globe a "Cool Technologies" searchable database 10. Africa’s battle to stay cool to reduce post-harvest losses and increase food security 11. Climate engineers: “Raghda and Iman” are the first trainers in Egypt to use environmentally friendly cooling media 12. U.S. Ratification of the Kigali Amendment 13. USEPA Stratospheric Protection Division Director Cindy Newberg wins Samuel J. Heyman Award 14. North American Sustainable Refrigeration Council Releases Refrigerant Transition Hub to Help Retailers Shift from High Global Warming Refrigerants