Different Kinds of Power Leave Different Marks

History doesn’t always change with a speech, a march, or a headline-making moment. Sometimes it shifts because someone spends years doing careful work that most people don’t notice until much later. Other times, it changes because a woman refuses to stay quiet and makes herself impossible to ignore. Both kinds of courage matter, and together, they show that influence can look calm or bold, patient or dramatic. Here are 10 women who changed history quietly and 10 who did it loudly.

Henry Hering (1814-1893) on Wikimedia

1. Rosalind Franklin

Rosalind Franklin helped change science through painstaking work with X-ray crystallography. Her images of DNA were crucial to understanding its structure, even though she didn’t receive the same public recognition as some of the men around her during her lifetime. 

MRC Laboratory of Molecular Biology on Wikimedia

2. Henrietta Lacks

Henrietta Lacks changed medicine without ever knowing it. Cells taken from her without her informed consent became the famous HeLa cell line, which helped researchers study cancer, develop vaccines, understand genetics, and much more. Her cells became the foundation of modern medical research.

14GTR on Wikimedia

3. Katherine Johnson

Katherine Johnson’s mathematical work helped make American spaceflight possible. At NASA, she calculated trajectories that supported major missions, including John Glenn’s orbital flight. She wasn’t a celebrity at the time, but her precision helped send astronauts safely into space and bring them home again.

NASA on Wikimedia

4. Chien-Shiung Wu

Chien-Shiung Wu was a brilliant physicist whose experiments helped overturn accepted ideas in nuclear physics. Her work on parity violation was central to a major scientific breakthrough. Even though the Nobel Prize connected to that discovery went to male colleagues, she changed what scientists understood about the universe.

Smithsonian Institution on Wikimedia

5. Mary Anning

Mary Anning made major fossil discoveries along England’s coast in the 19th century. Her findings helped shape early paleontology, even though she was often excluded from formal scientific circles because of her gender and class. She spent her life uncovering ancient worlds while the academic world took its sweet time admitting how much it owed her.

Gricharduk on Wikimedia

6. Frances Perkins

Frances Perkins helped reshape American labor policy from inside government. As the first woman to serve in a U.S. presidential Cabinet, she played a major role in New Deal reforms, including Social Security and labor protections. She wasn’t a showy public figure, but her work changed daily life for millions of people.

M. Jean McLane on Wikimedia

7. Tu Youyou

Tu Youyou helped transform malaria treatment through her research on artemisinin. Her work drew on traditional Chinese medical texts and modern scientific testing, eventually leading to a drug that saved countless lives. She made a global impact through patient research rather than personal fanfare.

Bengt Nyman on Wikimedia

8. Grace Hopper

Grace Hopper changed computing through both technical brilliance and practical imagination. She helped develop early computer programming languages and pushed the idea that computers could use more readable commands. A lot of modern technology owes something to her, even if most people using it don’t stop to think about where those ideas came from.

James S. Davis on Wikimedia

9. Wangari Maathai

Wangari Maathai built change through trees, community organizing, and environmental activism. She founded the Green Belt Movement in Kenya, which linked reforestation with women’s rights, democracy, and local empowerment. In her hands, planting trees became a powerful act of resistance.

Kingkongphoto on Wikimedia

10. Florence Nightingale

Florence Nightingale became famous, but much of her lasting impact came from patient reform work rather than battlefield drama alone. She used data, sanitation practices, and administrative pressure to change nursing and public health. Her legacy proves that a clipboard, statistics, and relentless follow-through can be surprisingly revolutionary.

Hering on Wikimedia

Now that we've covered the women who changed the world quietly, let's talk about the ones who used a megaphone.

1. Sojourner Truth

Sojourner Truth changed history with a voice people couldn’t easily dismiss. Born into slavery, she became a powerful abolitionist and women’s rights speaker, using her own life story to challenge injustice directly. She didn’t ask politely for the world to notice inequality; she stood up and made people listen.

Randall Studio on Wikimedia

2. Emmeline Pankhurst

Emmeline Pankhurst helped lead the British suffragette movement with tactics that were impossible to ignore. Her activism included protests, arrests, hunger strikes, and a willingness to disrupt polite society in the name of voting rights. Whether people admired or criticized her methods, they had a very hard time ignoring her.

Unknown author on Wikimedia

3. Shirley Chisholm

Shirley Chisholm changed history by walking directly into spaces that weren’t built to welcome her. She became the first Black woman elected to the U.S. Congress and later ran for the Democratic presidential nomination in 1972. Her slogan, “Unbought and Unbossed,” captured the fearless, direct way she moved through politics.

Adam Cuerden on Wikimedia

4. Dolores Huerta

Dolores Huerta helped organize farmworkers and fight for labor rights with fierce public energy. Alongside César Chávez, she co-founded what became the United Farm Workers and pushed for better wages and working conditions. Her activism was direct, persistent, and loud enough to make powerful people uncomfortable.

Gage Skidmore on Wikimedia

5. Gloria Steinem

Gloria Steinem became one of the most recognizable faces of modern American feminism. Through journalism, speeches, organizing, and media appearances, she helped bring feminist ideas into mainstream conversation. She knew visibility could be useful, and she used it to make issues like workplace equality, reproductive rights, and gender roles harder to ignore.

Warren K. Leffler on Wikimedia

6. Malala Yousafzai

Malala Yousafzai became a global voice for girls’ education after surviving an assassination attempt by the Taliban. Instead of retreating from public life, she continued speaking, writing, and advocating on an international stage. Her story shows how one teenager’s refusal to be silenced can echo around the world.

内閣官房内閣広報室 on Wikimedia

7. Ida B. Wells

Ida B. Wells used journalism as a weapon against lynching and racial terror in the United States. She investigated, published, lectured, and refused to soften the truth for audiences that preferred comfort over accountability. Her work was dangerous, but she kept going with a level of nerve that still feels astonishing.

Barnett on Wikimedia

8. Margaret Sanger

Margaret Sanger was a controversial but historically significant advocate for birth control access. She challenged laws, opened clinics, wrote publicly, and forced conversations about women’s reproductive choices into the open. Her legacy is complicated, but her impact on public debate around contraception was undeniably loud.

Bain on Wikimedia

9. Angela Davis

Angela Davis became a major activist, scholar, and public figure tied to civil rights, prison abolition, feminism, and racial justice. Her speeches, writings, and political visibility made her one of the most recognizable radical voices of the 20th century. 

Oregon State University on Wikimedia

10. Greta Thunberg

Greta Thunberg turned a school strike into a global climate movement. Her blunt speeches, protests, and refusal to flatter world leaders made her famous far beyond Sweden. Whether people praise her or argue with her, she has helped force climate urgency into conversations that might otherwise keep getting postponed.

Kushal Das on Wikimedia