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✊🏿AP African American Studies

African American Scientists

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Why This Matters

African American scientists have shaped virtually every field of modern science—from the mathematics that sent astronauts to the moon to the medical breakthroughs that save lives daily. Yet their stories reveal more than individual achievement: they demonstrate how systemic barriers in education, employment, and recognition have historically excluded Black Americans from scientific institutions, and how these scientists navigated, challenged, and transformed those systems. You're being tested on understanding how scientific innovation, racial politics, and social change intersect throughout American history.

Don't just memorize names and discoveries—know what each scientist's story illustrates about broader course themes. How did they challenge scientific racism? How did their work create opportunities for future generations? How did they balance professional achievement with advocacy for civil rights? These connections between individual accomplishment and collective struggle are what AP examiners want you to demonstrate.


Challenging Scientific Racism Through Excellence

The earliest African American scientists worked in an era when pseudoscientific racism claimed Black people were intellectually inferior. Their very existence as scientists was a form of resistance, and many explicitly connected their work to arguments for racial equality.

Benjamin Banneker

  • Self-taught mathematician and astronomer who published almanacs containing astronomical calculations, weather predictions, and tide tables—demonstrating intellectual capabilities that slaveholders denied existed
  • Corresponded directly with Thomas Jefferson in 1791, challenging Jefferson's racist assertions in Notes on the State of Virginia by using his own scientific achievements as evidence of Black intellectual equality
  • Surveyed the boundaries of Washington, D.C. alongside Andrew Ellicott, contributing to the literal construction of the nation's capital while being denied citizenship rights

Ernest Everett Just

  • Pioneering cell biologist whose research on fertilization and egg development challenged prevailing theories and established foundational principles in developmental biology
  • Faced systematic exclusion from major American research institutions despite his credentials, eventually conducting much of his work in European laboratories where he experienced less racial discrimination
  • Mentored generations of Black scientists at Howard University, emphasizing that scientific excellence and racial advocacy were inseparable missions

Compare: Banneker vs. Just—both used scientific achievement to counter racist ideology, but Banneker worked in the era of slavery while Just confronted Jim Crow-era institutional racism. Both demonstrate how scientific work itself became a form of resistance when performed by Black Americans.


Medical Pioneers and Healthcare Access

African American physicians faced dual challenges: advancing medical science while fighting for Black patients' access to quality healthcare. Their innovations saved lives across racial lines, even as segregation denied them recognition and resources.

Daniel Hale Williams

  • Performed one of the first successful open-heart surgeries in 1893, suturing a stab wound to the pericardium—a procedure most surgeons considered impossible at the time
  • Founded Provident Hospital in Chicago (1891), the first African American-owned hospital, creating training opportunities for Black nurses and physicians excluded from white institutions
  • Demonstrated that medical excellence could flourish in Black-led institutions, challenging assumptions about who could practice advanced medicine

Charles Drew

  • Revolutionized blood storage and transfusion by developing techniques for processing and preserving blood plasma, enabling the creation of large-scale blood banks
  • Directed the first American Red Cross Blood Bank during World War II, organizing blood collection that saved thousands of soldiers' lives
  • Publicly opposed racial segregation of blood donations, resigning from the Red Cross when they implemented policies separating blood by race—a practice with no scientific basis

Compare: Williams vs. Drew—Williams built Black medical institutions as alternatives to segregated healthcare, while Drew worked within mainstream institutions and challenged their racist policies from the inside. Both approaches advanced the practice of freedom in medicine.


Breaking Barriers in Government and Space Science

The mid-20th century saw African American scientists enter government agencies and federally funded research programs—spaces previously closed to them. Their presence challenged both scientific and social boundaries.

Katherine Johnson

  • Calculated trajectories for NASA's Mercury and Apollo missions, including the orbital equations that brought John Glenn safely home and the flight path for Apollo 11's moon landing
  • Broke dual barriers of race and gender in a field dominated by white men, earning the trust of astronauts who specifically requested her verification of computer calculations
  • Represents the hidden labor of Black women in American scientific achievement—her story remained largely unknown until the 2016 film Hidden Figures brought wider recognition

Mae Jemison

  • First African American woman in space, flying aboard the Space Shuttle Endeavour in 1992 as a mission specialist conducting experiments on weightlessness and motion sickness
  • Combined multiple expertise areas—physician, engineer, and astronaut—demonstrating that scientific careers need not follow single paths
  • Founded the Jemison Group after leaving NASA, focusing on technology development for underserved communities and advocating for diversity in STEM education

Shirley Ann Jackson

  • First African American woman to earn a doctorate from MIT (1973), specializing in theoretical physics and condensed matter research
  • Led major scientific institutions including serving as chairman of the U.S. Nuclear Regulatory Commission and president of Rensselaer Polytechnic Institute
  • Advocates for diversity as scientific necessity, arguing that excluding talented people from any group weakens the entire scientific enterprise

Compare: Johnson vs. Jemison—Johnson worked behind the scenes during segregation, her contributions long uncredited, while Jemison became a visible public figure and role model. Both illustrate how visibility and recognition shape the impact of scientific achievement on broader social change.


Agricultural and Chemical Innovation

Some African American scientists focused on practical applications that could improve economic conditions for Black communities, particularly in the post-Reconstruction South. Their work connected scientific research to racial uplift strategies.

George Washington Carver

  • Pioneered sustainable agricultural practices including crop rotation and soil conservation, teaching Southern farmers—many of them Black sharecroppers—how to restore depleted cotton fields
  • Developed hundreds of products from peanuts, sweet potatoes, and pecans, promoting alternative crops that could provide economic independence from the cotton economy that kept many Black farmers in debt
  • Embodied Booker T. Washington's philosophy of practical education and economic self-sufficiency, though this approach was debated within the Black community as a response to Jim Crow

Percy Julian

  • Synthesized cortisone and progesterone from plant sources, making these vital medications affordable and widely available for the first time
  • Overcame systematic exclusion from academic positions despite his qualifications, eventually founding his own pharmaceutical company when corporations wouldn't hire Black chemists
  • His Chicago home was firebombed twice after he moved into a white neighborhood, illustrating how scientific success did not protect Black Americans from racist violence

Compare: Carver vs. Julian—Carver focused on helping rural Black farmers through agricultural science, while Julian worked in industrial chemistry and pharmaceuticals. Both demonstrate how African American scientists often directed their work toward community benefit, not just individual achievement.


Science Communication and Public Engagement

Contemporary African American scientists have expanded their roles beyond the laboratory to become public advocates for science education and diversity.

Neil deGrasse Tyson

  • Director of the Hayden Planetarium and host of Cosmos: A Spacetime Odyssey, becoming one of the most recognized science communicators in America
  • Emphasizes science literacy as essential for democratic citizenship, arguing that an informed public is necessary for sound policy decisions
  • Represents increased visibility of Black scientists in popular media, while also speaking openly about experiencing racial profiling despite his fame—illustrating the persistence of racism even for accomplished individuals

Compare: Tyson vs. Banneker—separated by over two centuries, both used public communication to advance both science and racial equality. Banneker's almanacs reached 18th-century readers; Tyson's television programs reach millions today. Both demonstrate how scientific authority can amplify advocacy.


Quick Reference Table

ConceptBest Examples
Challenging scientific racismBanneker, Just, Carver
Medical innovation and healthcare accessWilliams, Drew
Government/space science barriersJohnson, Jemison, Jackson
Economic uplift through scienceCarver, Julian
Institution buildingWilliams (Provident Hospital), Julian (own company)
Science communicationTyson, Banneker
Intersections of race and genderJohnson, Jemison, Jackson
Connecting science to civil rights advocacyBanneker, Drew, Just

Self-Check Questions

  1. Which two scientists founded their own institutions after being excluded from existing ones, and how did their institution-building serve both scientific and racial justice goals?

  2. Compare and contrast how Benjamin Banneker and Charles Drew each challenged racist ideology—one through intellectual argument, one through policy opposition. What do their different approaches reveal about changing strategies of resistance across time periods?

  3. If an FRQ asked you to explain how African American scientists contributed to "the practice of freedom," which three scientists would you choose and why? Consider both their scientific work and their advocacy.

  4. Katherine Johnson and Mae Jemison both worked at NASA, but their experiences of visibility differed dramatically. What historical factors explain why Johnson remained unknown for decades while Jemison became an immediate public figure?

  5. George Washington Carver and Percy Julian both worked in chemistry-related fields but faced different types of barriers and chose different responses. How did each scientist's approach reflect broader debates within the African American community about strategies for advancement?