Hélène Metzger was a French historian of chemistry and a philosopher of science, whose work remains influential today. Her independence and drive brought her great recognition, despite the lack of credibility given to her as a woman.

Lise Meitner’s influential work concerning radioactivity in the early 20th century made her a target of the Nazis. She fled to Sweden in 1938, and it was there that she discovered the power of the fission reaction. Even though Meitner never worked on nuclear weapons, her 1939 research was essential in the research of nuclear power.

Malka Fisz Kolodny served as one of the first teachers in pre-State Palestine. She taught subjects ranging from basic literacy to chemistry and biology and encouraged, counselled, and supported her students, staying in touch with them for years.

As a member of the General Jewish Workers’ Bund, Helene Khatskels fought to realize socialist ideals about autonomy and liberation. As a Yiddish teacher and writer in Tsarist Russia and later the Soviet Union, she demonstrated a commitment to spreading and inspiring pride in Yiddish culture.

The first woman to be awarded a doctorate in physical chemistry at a German university, Clara Immerwahr’s her achievements were long overlooked by male-dominated university circles. Immerwahr committed suicide in protest of her husband’s involvement in the implementation of gas attacks during World War I. Recognized only posthumously, her name has become linked with moral responsibility in science.

Libbie Henrietta Hyman spent her career researching and writing the definitive texts on invertebrates, a monumental effort. Hyman transformed her love of the soft creatures to texts that brought her international recognition as an expert on invertebrates and as the world authority on flatworms.

Physiologist, physician, and teacher Rahel Hirsch worked for nearly two decades at the Medical Clinic of the Berlin Charité, eventually as the head of a polyclinic and a professor. Yet Hirsch was never paid at the Charité; she left in 1919 and opened a private practice. Hirsch emigrated to England in 1938, working as a laboratory assistant and librarian, but she struggled with mental illness and died in a psychiatric hospital in 1953.

Botanist Clara Heyn’s most significant achievement was her work with the plant family Leguminosae, especially the genus Medicago. She was an excellent botanist, teacher, and colleague.

Elisabeth Goldschmidt was the founder of genetic studies as a research and teaching discipline at the Hebrew University of Jerusalem. She saw in the mass immigration of Jewish communities to Israel a unique opportunity for genetic research that might also contribute to the welfare of society, and in consequence founded the systematic research in human genetics and genetic counseling services in Israel.

Cell biologist and immunologist Charlotte Friend discovered a virus that could transmit leukemia and made major contributions to our understanding of cancer and its causes. She served as director of the Center for Experimental Cell Biology at Mount Sinai Medical School, and later as the president of the New York Academy of Sciences and the American Association for Cancer Research.

An influential British physical chemist, Rosalind Elsie Franklin’s essential innovations in DNA research, including her X-ray DNA photography and her work in distinguishing between “A” and “B” forms of DNA, allowed Frances Crick and James Watson to solve the structure of DNA as early as 1953. Her important role in their work went largely unacknowledged until the 1990s.

Naomi Feinbrun-Dothan helped pioneer the scientific analysis of native Israeli flora and establish the study of botany and genetics at the Hebrew University of Jerusalem.

Tilly Edinger made her mark as one of the leading vertebrate paleontologists of the twentieth century. Her pioneering work in paleoneurology, the study of fossil brains, established her international reputation as the outstanding woman in her field. She performed research in Germany before World War II and continued researching and teaching in the United States until her untimely death in 1967.

German-born scientist Edith Bülbring was renowned for her work in smooth muscle physiology, which paved the way for contemporary cellular investigations. She pursued this work through a large and flourishing large research group at Oxford University, which she led for seventeen years. In 1958 she was elected to the Royal Society.

May Brodbeck, whose career in the sciences ran the gamut from teaching high school chemistry to exploring fundamental philosophical questions about the nature of human consciousness, was among the foremost American-born philosophers of science.