A letter to the editor of the Austin American-Statesman, published on December 23, 2009, asks this question: "The trillion-dollar question that Copenhagen has not answered [is this]: Because carbon dioxide molecules arc all identical, why is it that carbon dioxide from carbonated beverages, pets, cattle, farm animals, and humans, yeast, dry ice, fireplaces, charcoal grills, campfires, wildfires, alcohol and ethanol is good, and carbon dioxide from fossil fuel is bad? Can anyone in the United States answer this question?" What is your answer? Your aunt asks you how we know that volcanoes arc not responsible for the observed increase in carbon dioxide. What do you tell her?
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A letter to the editor of the Austin American-Statesman, published on December 23, 2009, asks this q...
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