The ozone layer over Antarctica ... vulnerable to accelerated ozone depletion from chlorine accumulation. Recent research, however, has provided a glimmer of hope for the future of the ozone layer.

These clouds accelerate chemical reactions that break down ozone ... like the Montreal Protocol have curbed ozone depletion, the persistence of CFCs means recovery is slow but steady.

Later amendments to the Montreal Protocol completely phased out production of CFCs. Past studies have used statistical analyses of changes in the ozone hole’s size to argue that ozone depletion ...

These clouds accelerate chemical reactions that break down ozone molecules. In contrast, ozone depletion is minimal ...