Once in America, people had a different way of thinking. We had won WWII and our resources were limitless. Rivers carried our garbage away. Smog had the smell of prosperity. And DDT was a wonder weapon against insect enemies.Then birds began dropping from our skies. The Cuyahoga River caught fire. And smog killed townspeople in Donora, Pennsylvania.No one in Washington seemed to care.But the environment had one champion, Senator Gaylord Nelson. Flying to an oil spill in Santa Barbara, California, he got an idea. He hired a college student, Denis Hayes, to make it happen. The result was the largest demonstration in US history.