Whatever happened to the hole in the ozone layer? | Global 3000

The damage caused by chlorofluorocarbons (CFCs) came to light in the 1980s when scientists discovered a huge hole in the ozone layer. Since the ban on CFCs came into effect, the ozone layer has been recovering, but only very slowly.
Read more: http://www.dw.de/program/global-3000/s-11487-9798