Climate Care
Calvin DeWitt, Calvin College Alumnus
The Banner
April 2007

Our star, the sun, pours forth immense energy. Some 93 million miles away, our 8,000-mile diameter Earth intercepts a small fraction of it. Yet this energizes nearly everything we know—Earth's life and ocean currents, winds and storms, our automobiles, our homes. This energy also tends to heat the Earth, so it must be radiated back to outer space. Earth's energy balance needs to be maintained year after year, century after century.

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