When a waiting world learned on April 12, 1955, that Jonas Salk had successfully created a vaccine to prevent poliomyelitis, he became a hero overnight. Born in a New York tenement, humble in manner, Salk had all the makings of a twentieth-century icon--a knight in a white coat...
When a waiting world learned on April 12, 1955, that Jonas Salk had successfully created a vaccine to prevent poliomyelitis, he became a hero overnight. Born in a New York tenement, humble in manner, Salk had all the makings of a twentieth-century icon--a knight in a white coat...