Ozone layer on the mend but recovery delayed, says UN

The earth's ozone layer is finally on the mend after decades of damage, but is recovering more slowly than experts had originally hoped, two UN agencies reported on Friday.
The message came in an official summary of a report by 250 scientists to be issued next year by the World Meteorological Organisation (WMO) and the UN Environmental Programme (UNEP) on the effects of the 1987 Montreal Protocol, which committed signatory nations progressively to ban the use of ozone-harmful products.

"While these latest projections of ozone recovery are disappointing, the good news is that the level of ozone-depleting substances continues to decline from its 1992-94 peak in the troposphere and the 1990s peak in the stratosphere," said WMO secretary-general Michel Jarraud.