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From the Letter from the Editor:
I can't pick up a newspaper or magazine these days without reading about air pollution, rain forests and the "Greenhouse effect."
In case you've been hibernating, the "greenhouse effect" refers to the gradual warming of the earth as a result of air pollution—chiefly carbon dioxide—caused by the burning of fossil fuels such as oil, coal and wood. Like the glass walls of a greenhouse, this mantle of pollution works to let in the sun but keeps the heat from escaping into space. As a result, the temperature of the earth is slowly but steadily rising. An increase in global temperature means higher ocean levels and drastic climate changes that will affect every living thing on earth.
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