IF YOU thought the ozone hole had gone for good, think again. Predictions that it would be sinking into the Antarctic sunset by now appear wrong, for the hole has come back with a vengeance.
The annual spring thinning of the stratospheric ozone layer over Antarctica is as serious this year as in the record year of 2000, the World Meteorological Organization confirmed on 2 October. And it has lasted longer than ever, only beginning to break up over the Southern Ocean in recent days. Perhaps most worrying is that the thinnest part of the ozone hole, where levels are…
