Ozone layer: the road not taken Counterattack

摘要

SIR — As distinguished and experienced participants in the evolution of scientific understanding of ozone-layer depletion, Prather et al. (Nature 381, 551-554; 1996) provide a valuable quantitative perspective on the advantages of acting early to correct global atmospheric catastrophe. Although scientists have given an early warning on climate change, there has been little success so far in slowing the growth in greenhouse gas emissions. It is therefore worth looking a little more deeply at some ofthe reasons why protection of the ozone layer was so successful.