With ozone layer depletion just beginning, large holes in the ozone layer are rare now; but the frequency and severity of ozone layer depletion will increase with time. (realclimate.org)
This, in a country that has a huge hole in its ozone layer. (canadianbusiness.com)
Good news for fans of planet Earth: The seasonal hole in the ozone layer over Antarctica was at its second - smallest point in the past 20 years, according to new research from NASA and the National Oceanic and Atmospheric Administration (NOAA). (discovermagazine.com)