Humans not primary cause of global warming |

Humans not primary cause of global warming

Dear Editor: Bob [Keenan, letters to the editor, The Aspen Times, May 4], again you misrepresent me. Long-term global warming is a fact. The poles on both Earth and Mars are melting. I’ve quoted the Planck Institute’s study that shows the sun is hotter than it has been in 8,000 years several times, yet showed that for the last three years, earth temperatures are down, because of a temporary decrease in solar output, not because there is less carbon dioxide. Contrary to your assertion that human activities are the primary cause of global warming, a recent survey shows 29 percent of climatologists reject that premise to some degree, and less than 10 percent strongly support it. All the cars in the U.S. produce less than three-tenths of a billion tons, or just one-fifth of 1 percent of the total carbon dioxide. Parking them all would still leave 99.8 percent of the carbon dioxide being emitted. The impact of human carbon dioxide emissions on global warming is even further reduced by the fact that all the carbon dioxide in the atmosphere has only 10 percent of the greenhouse effect of the water vapor in the air. Thus, parking all cars in the United States would contribute less than one part in 5,000 to global warming dynamics! Restrictions suggested by you, Susan Hassol and Rick Heede, such as trading in gas guzzlers, buying efficient appliances, or replacing lightbulbs, will be costly and can have no discernible impact on global warming, although I’m all in favor of energy independence (a different issue).No one wants to breathe pollution, but separate that problem from increased levels of carbon dioxide, which I think are good. And Bob, a sea level rise of 2 to 3 feet, as you suggest, will not flood anyone in Aspen – or Colorado, for that matter. Come on, get real.Mike MasonCedaredge

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