Rachel Carson (1907–1964) was an American marine biologist and author. After working for the U.S. Fish and Wildlife Service, she became widely known for bringing scientific knowledge about the natural world to a broad readership and is regarded as a pioneer of the modern environmental movement. Her best-known book, "Silent Spring," documented the ecological and human consequences of widespread pesticide use, sparked public debate over pesticide safety, and had a profound influence on the development of the modern environmental movement.