It is planned that by 2005 in developed countries and 2015 in developing countries, the use of ozone depleting gases, such as CFCs, will be phased out. Halons, used as fire extinguishing chemicals, also destroy ozone. A damaged ozone layer means that more of the sun's harmful UV radiation is able to reach the earth's surface. This radiation can cause sunburn, skin cancer and eye diseases. Go to the following link for more information about UV radiation .
Ozone depletion occurs over much of the planet.
These reactions happen on ice crystals in the very cold, high-altitude clouds above Antarctica. Users of these web pages are deemed to have read and accepted the conditions described in the Copyright Notice and Disclaimer .