Description: Photos in the Science Service collection documenting Herbert Hoover's historic acceptance of the Presidential nomination with live radio coverage.
Description: Senior scientist, Dr. Cynthia Gilmour, is the Director of the Microbial Ecology Lab at the Smithsonian's Environmental Research Center where studies microbes that produce methylmercury in order to reduce the risk of mercury pollution. #Groundbreaker
Description: Botanist and suffragette, Mary Agnes Chase, led the Smithsonian's Herbarium, was the eminent expert on grasses, and at the age of 93, published a 3-volume index of U.S. grasses with over 80,000 species. #Groundbreaker