Here are 10 big environmental victories — and 10 big failures. Earth Day turns 50 today. The original wave of coast-to-coast demonstrations in 1970 not only transformed American priorities, leading to landmark legislation like the Clean Air Act, but helped shape the modern global environmental movement. In the past half-century, air and water pollution have plummeted in the United States, the bald eagle is no longer endangered, and environmental laws pioneered in America have