The National Academy of Sciences: Abstracts of Papers Presented at the Chapel Hill Meeting .................................... 475 Special Articles: The Secretion of Iodine by Thyroid Glands Cultivated in the Lindbergh Pump: DR. LILLIAN E. BAKER. Photographic Nature of Tanning of the Human Skin as Shown by Studies of Male Hormone Therapy: DR. JAMES B. HAMILTON and DR. GILBERT HUBERT. Action of...

Rachel Carson's 1962 Silent Spring exposed both observed and potential environmental and health externalities of the increasing organochlorine and organophosphate insecticide use in the United States post-World War II. Silent Spring was a critical component in a popular movement that resulted in increased regulation and the development of safer pesticides. Most changes in pesticide use in the g...