OzoNews Volume XXI - 30 January 2021

In this issue: 1. A tribute to Professor Paul J. Crutzen 2. Kigali Amendment latest ratification 3. Reset earth - One ozone. One planet. One chance 4. Sources of new ozone-damaging HCFCs traced back to origins 5. Susan Solomon, Massachusetts Institute of Technology, will receive the 2021 National Academy of Sciences (NAS) Award for Chemistry in Service to Society 6. Flight at the edge of the ozone layer 7. Remise au niveau de formateurs en froid en Afrique francophone 8. Códigos del sistema armonizado (SA) para los hidrofluorocarbonos (HFC) - Evento virtual 9. United States of America, The White House, Executive order on tackling the climate crisis at home and abroad 10. Green Cooling Summit 2021: Managing the HFC phase-down with natural refrigerants