Bowermaster and Steger explain a startling drama of how our everyday lives contribute to global warming. The refrigerator that keeps our orange juice cold is lined with another contributor to the greenhouse shield chlorofluorocarbons. Driving to work burns gasoline, which sends millions of particles of carbon dioxide into the atmosphere. The mahogany desk that you work at may have come from a tree in the rain forests, and the tree once helped absorb carbon dioxide from the atmosphere. The magnitude of a global warming could be enormous.
Ozone filters the sun's most dangerous ultraviolet rays from the earth.
By doing so, humans are protected from various potentially disastrous ills. CFCs were first developed in the 1930s. They were used to cool refrigerators and air conditioners and clean electronics. They are also used in the manufacturing of plastic foam, home insulation, and throwaway food containers. We have already lost about two percent of the ozone layer over Antarctica and although this may seem to be a small amount, the problem is a global one.