Consider the evolution of environmental policy in the U. since 1970.

Consider the evolution of environmental policy in the U.S. since 1970. Summarize the key elements in this evolution and integrate these elements into your views on the direction our policies are taking as we enter the 21st century. Your response should contain approximately 250-300 of your own words. Provide a reference citation for your source material.

Environmental Policy in the US since 1970There is no doubt that the United States spend more than any other country in the worldon cleaning up the environment. In 1993, US has spent $ 140 billion...