Source: Wiki Commons
Norman Borlaug (1914 - 2009) created a Green Revolution, beginning in the 1940s. By the 1960s, his agricultural revolution fed millions that would otherwise have starved.
Tank respirator ("iron lung") used at Union Hospital, Terre Haute, Indiana, from 1953 - c. 1973. Indiana State Museum, 650 West Washington Street, Indianapolis, Indiana, USA.
At one time, polio was one of the most feared health challenges in the United States. It was a devastating disease. The disease caused paralysis, and even death, in its victims. President Franklin D. Roosevelt became one of those victims in the 1920s and couldn't walk for the rest of his life. Some of the victims couldn't breathe without the help of an iron lung. In the early 1950s, "polio outbreaks caused more than 15,000 cases of paralysis each year in the United States," according to the Center for Disease Control. Finally, in 1955, a vaccine through inoculation, developed by Jonas Salk, was licensed for release to the general public. An oral vaccination by Albert Sabin came in 1962. These vaccines eliminated the polio virus from the United States, making it one of the most successful health campaigns of the 20th century.
Smithsonian Timelines of history: The ultimate visual guide to the events that shaped the world. (2018). New York: DK Publishing.
Smithsonian Science: The Definitive Visual Guide. (2016). New York: Dorling Kindersley.
Urdang, L. (2001). The Timetables of American History: History and Politics, the Arts, Science and Technology, and More in America and Elsewhere. Simon & Schuster.