| It is a proven fact that the ozone layer filters out much of the harmful radiation from the sun. |
| He was awarded a Nobel Prize in 1995 for his work on the hole in the ozone layer above the polar icecaps. |
| The ozone layer is important to humans, who risk skin cancer and other health effects from high exposure to harmful ultraviolet rays. |
| All that hair lacquer skooshed had further reduced the ozone layer and made it an absolute imperative. |
| It eventually reaches the stratosphere, where it causes a thinning of the ozone layer. |
| Many scientists have studied the effects of pollutants on the ozone layer, often with startling results. |
