On March 26, 1953, American medical researcher Dr. Jonas Salk reported that he had successfully tested a vaccine against poliomyelitis. watch
This Day in History, April 26th. The polio vaccine by Jonas Salk begins human testing, Captain John Smith lands in Jamestown, Lucy from I Love Lucy dies, and the Treasury unveils a new $50 bill in our April 26th - This Day in History video recap. watch
This Day in History, February 23rd. The U.S. flag was raised at Iwo Jima on Mt. Suribachi, the Alamo siege began, Jonas Salk discovered the polio vaccine, and a sheep named Dolly was cloned at the Roslin Institute in our History video recap. watch
