In spite of recent discoveries related to the mechanism of the Antarctic ozone hole (AOH), we do not as yet have a sufficient scientific base to answer important policy questions: is the AOH a completely new phenomenon, or is it are current one? Is it produced by human activities? And what can and should be done about it? I suggest here a hypothesis concerning the cause of the AOH, which may provide at least partial answers.
The AOH is more than a scientific curiosity. Its dramatic discovery in 1985 raised fears about the fate of global ozone and provided the impetus for an international effort to limit and roll back the worldwide production of chlorofluorocarbons (CFCs), synthetic chemicals widely used in refrigeration and industrial processes.
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