Dr. Mavalvala's work helped confirm a prediction Albert Einstein made 100 years earlier.
Rita Levi-Montalcini had to deal with patriarchal disapproval, Fascist anti-Semitism, misogyny and war before earning a Nobel Prize for discovering nerve growth factor. Says she, "If I had not been discriminated against or had not suffered persecution, I would never have received the Nobel Prize."
Pereira invented a surgical glue which may eventually replace the need for sutures and the resulting chance of tearing and infection.
Katherine Johnson was a "human computer" at the National Advisory Committee for Aeronautics (later NASA), doing the math that would get Alan Shepard, John Glenn, and Buzz Aldrin to space and back.
When her mother started paying her to generate secure passwords, she realized other people would do the same.
At 12 years old, she observed an accident at a cotton mill where she worked, and designed her first invention: a safety design for looms. By her death she had 90 inventions and 22 patents.
During family trips to India, Deepika saw that people did not have access to clean water. At age 14, she decided to do something about it.
Emily Hahn led a life as varied as her writings. She got a degree in engineering to prove that she could, then made a career as a writer; she lived in a red-light district and dined with millionaires; she had a family in England and worked in New York.