Rachel Carson was a conservationist, marine biologist, and author. She is credited with authoring an influential book titled Silent Spring, which played a significant role in advancing the global environmental movement. Carson is also remembered for her book, The Sea Around Us, which earned her a U.S. National Book Award. She was posthumously honored with the Presidential Medal of Freedom.
Emmy Noether was a German mathematician best remembered for her contributions to abstract algebra. She is credited with discovering Noether's theorem, which is regarded as a fundamental theorem in mathematical physics. One of the most important mathematicians of her generation and the most important woman in mathematics history, Emmy Noether developed theories of algebras, fields, and rings.
Ada Lovelace was a mathematician known for her work on the Analytical Engine, a mechanical general-purpose computer proposed by Charles Babbage. Many believe that Lovelace was the first to recognize the potential of computers. It is also believed that she published the first algorithm after realizing that the algorithm could be carried out by a machine like the Analytical Engine.
Caroline Herschel was a German astronomer who is credited with the discovery of many comets, such as 35P/Herschel-Rigollet, which is named in her honor. In 1828, Herschel became the first woman to be honored with a Gold Medal of the Royal Astronomical Society. She was also the first female scientist to receive a salary.
10 Vera Rubin
American astronomer Vera Rubin is best known for her pioneering discoveries on galaxy rotation rates, her groundbreaking work confirming the existence of dark matter and for her life-long advocacy for women in science. She studied the galactic rotation curves and provided strong evidence of the existence of dark matter. The Vera C. Rubin Observatory in Chile is named after her.
Dorothy Hodgkin received the 1964 Nobel Prize for mapping the structure of penicillin and Vitamin B12. She is also known for her work on insulin. Beginning her work on structure of an organic compound by using X-ray crystallography as an undergraduate student, she later developed it further and used it to determine the three-dimensional structure of complex organic molecules.
12 Jane Goodall
Jane Goodall is an English anthropologist and primatologist. Goodall's research proved that chimpanzees could use tools like stalks of grass to fish out termites from termite holes; this also challenged the long-held belief that chimpanzees were vegetarians. Goodall also discovered that chimpanzees are capable of emotions like sorrow and joy. Goodall is also credited with founding the Jane Goodall Institute.
A child prodigy who was never formally educated, Shakuntala Devi became a mathematical genius earning the title of Human Computer for her exceptional calculating abilities. The Indian genius was also an astrologer and a gifted writer who authored books on maths, astrology, homosexuality in India and a crime thriller novel.
After losing her father at 4, Cecilia Payne-Gaposchkin was raised singlehandedly by her mother. The incredibly talented Cecilia studied at Cambridge but failed to secure a degree because of her gender. She later joined Harvard and opposing prevalent beliefs, proposed that stars were mainly made of hydrogen and helium.
Lynn Margulis was an evolutionary theorist, biologist, educator, and science author. She was a modern proponent of the significance of symbiosis in evolution. Along with British chemist James Lovelock, Margulis was the co-developer of the Gaia hypothesis. She was a strong critic of neo-Darwinism. In 2001, she was honored with the Golden Plate Award of the American Academy of Achievement.
16 Dian Fossey
17 Mileva Marić
18 Mary Jackson
American mathematician and aerospace engineer Mary Jackson went down in history as the first African-American woman to work as a NASA engineer. Initially a math teacher, she later joined NACA under Dorothy Vaughan and contributed to countless American space programs at a time when racial segregation was the norm.
American mathematician Dorothy Vaughan was also known as a "human computer." Initially a math teacher, she became the first African-American supervisor of NACA, later part of NASA, at a time when racial segregation was rampant in the U.S. Her contribution to the early American space programs is invaluable.
Marie Curie and Pierre Curie’s daughter, Irène Joliot-Curie, herself a brilliant scientist, won the 1935 Nobel Prize in Chemistry, along with her husband, Joliot-Curie, for discovering artificial radioactivity. She was also one of the first three female French government members. She tragically died of leukemia caused by exposure to radiation.
After studying physics and astronomy at Wellesley College, Annie Jump Cannon traveled across Europe and focused on photography for a decade, before venturing to study astronomy again. At the Harvard Observatory, she made a considerable contribution to the classification of stellar bodies. She was almost deaf due to scarlet fever.
27 Sally Ride
American biochemist Jennifer Doudna of the University of California, Berkeley, who has made fundamental contributions in biochemistry and genetics, is best-known for her pioneering work in CRISPR gene-editing. Doudna and Emmanuelle Charpentier received the 2020 Nobel Prize in Chemistry for developing a method for genome editing through CRISPR, marking them as the only two women to share science Nobel ever.
29 Lise Meitner
Lise Meitner was an Austrian-Swedish physicist best remembered for her contributions that led to the discoveries of nuclear fission and the element protactinium. Nicknamed the German Marie Curie by Albert Einstein, Lise Meitner became the second woman in the world to receive a doctorate in physics in 1905. In 1997, chemical element 109 meitnerium was named in her honor.
Credited with coining the term software engineering, computer scientist and systems engineer, Margaret Heafield Hamilton served as the Director of the Software Engineering Division of the MIT Instrumentation Laboratory, overseeing the development of the on-board flight software for NASA's Apollo program. A prolific writer, she is also the founder of two software companies; Higher Order Software and Hamilton Technologies.
31 Sylvia Earle
Nettie Stevens was an American geneticist. She is credited with discovering sex chromosomes which later came to be known as the X and Y chromosomes. In 1994, Nettie Stevens was inducted into the National Women's Hall of Fame.
33 Tu Youyou
Chinese phytochemist and malariologist Tu Youyou is best remembered for her Nobel Prize-winning discovery of the anti-malarial drug qinghaosu, or artemisinin. She is the first Chinese female Nobel laureate. A tuberculosis infection in her younger days had inspired her to step into medicine. She later studied traditional Chinese medicine, too.
The first woman to command the International Space Station, NASA astronaut Peggy Whitson was born to farmers and decided to become an astronaut after watching the moon landing on TV. She also boasts of a PhD in biochemistry and has been a researcher and educator of biochemistry and genetic engineering.
Donna Strickland is a Canadian optical physicist who is considered a pioneer in the field of pulsed lasers. In recognition of her research on the practical implementation of chirped pulse amplification, she was jointly awarded the Nobel Prize in Physics in 2018, together with Gérard Mourou. She is currently a professor at the University of Waterloo in Ontario, Canada.
Biocon founder and chairperson Kiran Mazumdar-Shaw is a self-made billionaire entrepreneur who made it to Forbes’s Power Women 2020 list. Though she initially wished to be a brewer like her father, she later drifted to the biochemical industry. Apart from revolutionizing the Indian biopharma market, she also heads a charitable organization.
38 Nell Newman
Nell Newman is a biologist, environmentalist, and former child actress. An ardent supporter of sustainable agriculture, Newman is credited with founding a pet food and organic food production company called Newman's Own. For her environmental leadership, Newman was honored with the Rachel Carson Award in 2014. In 2017, she was made an inductee of the Specialty Food Hall of Fame.
As part of the FDA, Frances Oldham Kelsey prevented thalidomide from being allowed in the US drug market as a painkiller, as she was unsure of its impact. Her concerns were proved right when the drug caused birth defects in European children. She was subsequently awarded by the US president.
40 Sudha Murty
Known for her humility and simplicity, Indian philanthropist and author Sudha Murty had humble beginnings as a TELCO engineer. She is married to Infosys co-founder Narayan Murty and heads the Infosys Foundation. The Padma Shri winner has penned over 200 titles, such as Dollar Bahu, in both Kannada and English.
Jocelyn Bell Burnell is an astrophysicist from Northern Ireland. As a postgraduate student, she discovered the first radio pulsars. She graduated from the University of Glasgow and pursued an academic career. In 2018, she received the Special Breakthrough Prize in Fundamental Physics for her discovery of radio pulsars. She donated the three million dollars she received as prize money.
Rita Levi-Montalcini was an Italian neurologist whose discovery of nerve growth factor earned her the 1986 Nobel Prize in Physiology or Medicine. Throughout her life, Levi-Montalcini's work in neurobiology earned her several other honors and awards, including the Golden Plate Award from the American Academy of Achievement and the European Academy of Sciences' Leonardo da Vinci Award.
Former IBM CEO Ginni Rometty was named to the World's Top 50 Women in Tech by Forbes in 2018. She led IBM through its conversion to a leading data company. The Northwestern University alumna has also earned the Edison Achievement Award. She became part of Time 100 in 2012.
Kathleen Rubins is a microbiologist and NASA astronaut. In 2016, she became the 60th woman to fly in space when she launched on a Russian Soyuz spacecraft. She traveled to the International Space Station and returned to Earth after a few months. She has spent a total of 300 days, 1 hour, and 31 minutes in space.
French mathematician Sophie Germain had used the pseudonym M. Le Blanc to get hold of notes from the École Polytechnique, as being a woman, she was not allowed to attend the institute. She later contributed to the number theory and also pioneered the elasticity theory. She died of breast cancer.