Marie Curie was a Polish physicist and chemist who was the first woman to win a Nobel Prize and the first person and only woman to win twice. 
Chien Shiung Wu was born in China and traveled to the U.S. to study physics at the University of California Berkeley. She specialized in nuclear fission receiving a doctoral degree in 1940. She became a U.S. citizen in 1954.
Rosalind Franklin was a British chemist known for her influential role in the discovery of the structure of DNA.
Alice Ball was an African American chemist, famed for her development of an injectable oil that was an effective treatment of leprosy during the 1940’s.
Mamie Phipps Clark along with her husband were the first African-Americans to obtain their doctoral degrees in psychology from Columbia University in New York City. Her work developed into the famous doll experiments that assessed children’s attitudes towards race.
Susan La Flesche Picotte was the first Native American to earn a medical agree.