Fridtjof Wedel-Jarlsberg Nansen was a explorer, scientist, diplomat, humanitarian and Nobel Peace Prize laureate. He led the team that made the first crossing of the Greenland interior in 1888, and won international fame after reaching a record northern latitude of 86°14′ during his North Pole expedition of 1893–96. His techniques of polar travel and his innovations in equipment and clothing influenced a generation of subsequent Arctic and Antarctic expeditions.
Alexander Graham Bell (March 3, 1847 – August 2, 1922) was an eminent scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone. Bell's father, grandfather, and brother had all been associated with work on elocution and speech, and both his mother and wife were deaf, profoundly influencing Bell's life's work.
Mary Sherman Morgan (1921–2004) was a rocket scientist (!). She invented the liquid fuel Hydyne in 1957, which went on to power the U.S.’s Jupiter-C rocket. | 34 American Lady Scientists Who Changed The World