Dispelling the myths......the ozone layer
The ozone layer stops most of the sun’s harmful ultra violet rays from reaching us, and so is essential to life on earth. It is part of the greenhouse gases, surrounding the earth. Less ozone means more skin cancers, eye diseases, damaged crops and smog pollution. The destruction of the ozone layer has come about by man–made chemicals called chlorofluorocarbons (CFC’s) being released into the atmosphere. CFC's are used in fridges, air conditioning units and spray cans.
Our global footprint can be seen in the destruction of the ozone layer, which has become thinner in places and has actual holes in the Antarctic region. The hole in the ozone layer above Antarctica is thought to be as big as the USA and as deep as Mount Everest. Over Europe the ozone layer is thinning as well. Perhaps as much as 10% of the ozone shield has been destroyed (source: Dirty Planet – Friends of the Earth, Caroline Clayton, 2001). However, since learning this changes have been implemented and CFC’s have been banned in all products. The ozone layer is now believed to be slowly repairing itself.
The ozone layer is not to be mixed up with the greenhouse effect. While it is a part of the greenhouse gases surrounding the earth, it is not part of the greenhouse effect, which regulates the temperature on earth.