1.   Recent studies suggest that ozone depletion is to blame for widespread blindness among sheep in southern Chile, on the edge of the Antarctic ozone hole.

2.   If this trend continues, the ozone hole this year will be the deepest ever.

3.   Phytoplankton in Antarctic waters are being damaged by ultra-violet radiation because of the opening of the ozone hole over the South Pole, according to NASA scientists.

4.   But it cautioned that this did not constitute an ozone hole, similar to that over Antarctica, as had been widely reported.

5.   An American Nasa report has also predicted the creation of an Arctic ozone hole.

6.   According to Californian researchers, increased ultraviolet radiation from the ozone hole above Antarctica is scarcely having any effect on the growth of marine plankton in the ocean below.

7.   After several weeks, changes in weather patterns cause ozone from surrounding areas to flow in and replenish the ozone holes, scientists say.

8.   Brown said that it seems to take a scare, like the ozone hole, for the public to react to environmental problems.

9.   Dora Trananez, a store clerk, said she first learned about the ozone hole from a television program featuring Magas.

10.   Gunson said findings from the Atlantis flight suggest that chlorine is recombining in the Antarctic ozone hole as hydrochloric acid and chlorine nitrate.