Human beings have been concerned about nature and their place in it for millennia. Disquiet about the consequences of human action on the natural environment date back to the ancient Greeks and Romans. The efforts of the green movement can be traced back to the 19th century. In this period, individuals, groups, and organizations began campaigning for the conservation and preservation of natural areas and the protection of wildlife species. Efforts to combat pollution also began. It was not until the 1960s, however, that the green movement in its more modern incarnation emerged. The green...