“Without a protective ozone layer in the atmosphere, animals and plants could not exist, at least upon land. It is therefore of the greatest importance to understand the processes that regulate the atmosphere's ozone content.” This quote from the Swedish Royal Academy of Sciences – announcing the 1995 Nobel Prize for Chemistry to Paul Crutzen, Mario Molina, and F. Sherwood Rowland – remains relevant to this day. The more we study stratospheric ozone, the more we realise its importance not only