Rachel Louise Carson (1907-1964) earned a master's degree in zoology and had a career working on publications for the U.S. Fish and Wildlife Service. She became known, however, for her writings on nature and on man's relationship to the natural environment, chiefly "Silent Spring," published in 1962, which addressed the risks of pesticides to wildlife The influence of the book was so great that Carson has been called the mother of the modern environmental movement. Other books by Carson include "Under the Sea Wind" and "The Sea Around Us."