Read The NYT article, "How ‘Silent Spring’ Ignited the Environmental Movement” by Eliza Griswold (9/21/2012). This article was written to celebrate the 50th anniversary of Silent Spring (1962) written by Rachel Carson, one of the most influential books in the history of the U.S. environmentalist movement.

According to the article, what was the contribution of Silent Spring (1962) to American environmentalism in the 1960s-1970s, i.e., "Reform Environmentalism” (GL 16 written by Robert Brulle)?