Science and Policy: The Destruction of the Ozone Layer.

May 7th, 2015
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Rush University
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I wish all states would step in and have a law to make old cars pass an emissions test. California has passed the law and it worked.

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Environmental awareness among the public and policymakers has been growing since the 1960s, when it became widely recognized that human activities were having harmful and large-scale effects on the environment. Scientific and engineering research is also playing an increasing role in both understanding and protecting the environment. Research has demonstrated the importance of the environment to human health and well-being as well as the economic, social, and aesthetic harm that can stem from poor environmental practices. Research has suggested ways to curb harmful practices without incurring excessive costs. For example, scientific and engineering research has provided cost-effective ways to reduce the pollution in air and water in the United States; has demonstrated the importance of areas, such as wetlands, that were once considered of little value to human societies; and has helped to preserve natural ecosystems and the species that inhabit them.Science and Policy: The Destruction of the Ozone LayerIn the early 1970s, researchers began to consider the fate in the atmosphere of a particular group of chemicals known as chlorofluorocarbons (CFCs) that have been widely used as refrigerants and in industry. These scientists demonstrated that, when these chemicals rise high into the stratosphere, they react with sunlight to produce chemical radicals that cause the destruction of ozone molecules. This ozone in the stratosphere shields the earth's surface from the harmful u

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