Prior to the Nixon administration, environmental policy in the United States was rudimentary at best. Since then, it has evolved into one of the primary concerns of governmental policy from the federal to the local level. As scientific expertise on the environment rapidly developed, Americans became more aware of the growing environmental crisis that surrounded them. Practical solutions for mitigating various aspects of the crisis - air pollution, water pollution, chemical waste dumping, strip mining, and later global warming - became politically popular, and the government responded by...