Why Is the Ozone Hole Growing?
by Stephen Leahy


TORONTO - A huge ozone hole has developed over Antarctica for the second year running, exposing southern Argentina and Chile to high levels of damaging ultraviolet radiation from the Sun.

The "hole" over the South Pole -- actually an annual thinning of the ozone layer during the southern hemisphere spring months of September and October -- currently measures about 25 million square km and growing, according to European Space Agency satellite data, and it may yet become the biggest hole in history.