The World Meteorological Organization is reporting this week that the hole is back and bigger than ever. And it could grow larger in as spring returns to the region. In the past two years ozone holes larger than Europe have opened over the Antarctic and Southern Ocean.
The hole and the entire ozone layer and life on Earth would be in far worse shape if not for the The Montreal Protocol.
See also my stories on ozone and Montreal Protocol:
Ozone Treaty Best Bet to Slow Climate Change
Skin Cancer and the Record-breaking Antarctic Ozone Hole
60 Years to Restore the Ozone Layer Over Antarctica