Headstrong

By Rachel Swaby

13 min read

Why does it matter? Because the women who built modern science were systematically written out of it — and we're still paying the price.

In 2013, the New York Times published an obituary that opened with a recipe. The dead woman had invented a propulsion system still orbiting Earth today. The paper led with her Beef Stroganoff. When the outcry forced a correction, everyone treated it as a one-time embarrassment — a single editor's bad call, quickly fixed, lesson learned. But the same move appeared in 1964, in 1899, and almost certainly the week you were born. This isn't a gaffe with a correction. It's a policy without a memo. Rachel Swaby's Headstrong makes the case that the history of science isn't missing women — it's been actively edited to remove them, and that editing had consequences. Real ones. In labs, in hospitals, in the years Alice Evans spent being ignored while brucellosis kept killing people who drank unpasteurized milk — all because the dairy industry found her credentials easier to dismiss than her data.

The Erasure Wasn't Accidental — It Was a System

Picture a New York Times obituary running its first several paragraphs on a woman's cooking and her willingness to relocate for her husband's career before mentioning, almost as an afterthought, that she had spent decades designing propulsion systems for spacecraft. That is what happened to Yvonne Brill in 2013. Only after a public outcry did the paper revise the piece to lead with the actual reason she warranted a prominent obituary: she was a brilliant rocket scientist. The Stroganoff came first. The rockets came second. The editors apparently saw nothing wrong with that ordering until readers made enough noise.

You might want to call this a clumsy one-off, an embarrassing lapse by a single editor. But go back to 1964, and you find the same logic operating in an entirely different newsroom, on an entirely different continent. When British chemist Dorothy Crowfoot Hodgkin won the Nobel Prize for decoding the molecular structures of complex biological substances, a headline announced the news as: "Nobel Prize for British Wife." Her chemistry vanished behind her marital status. The implication was clear — her identity as someone's spouse was the more meaningful category.

Headstrong is built to dismantle that reflex. The Stroganoff obituary and the stolen Nobel headline are the same story at different scales. The system does not always shout its bias; sometimes it just quietly reassigns the credit, clips a name to two initials, or leads with the noodles. How that mechanism worked inside the laboratories — where the actual data moved, and whose name ended up on it — is where the story gets worse.

The Science Was Extraordinary — Full Stop

The science these women did was world-class by any standard you care to apply — not admirable given the obstacles, not impressive for a woman in that era, but genuinely, measurably extraordinary by the hardest measure available: it changed what humanity knew to be true.

Consider Lise Meitner in the winter of 1938. She is in Sweden, stateless, having fled Nazi Germany with two suitcases and no passport. The research she spent years building in Berlin has been left behind. Her collaborator Otto Hahn is still at his bench, bombarding uranium with neutrons, and he is confused by what he is seeing — the collisions keep producing smaller elements, roughly half uranium's size, when the whole point was to create heavier ones. He writes to Meitner asking if she can suggest some 'fantastic explanation.' During a cross-country ski trip with her nephew, a physicist himself, Meitner starts turning the problem over. The standard picture of the atomic nucleus treated it as something solid and fixed, like the pit of a peach. What if that was wrong? What if the nucleus was more like a spinning disc of pizza dough — wobbly, capable of stretching until the center went thin and the whole thing tore into two pieces? The math worked. The split nucleus would produce exactly the lighter elements Hahn kept finding. She had just explained nuclear fission — the physical mechanism underlying the atomic age — while on a ski trip, in exile, working from someone else's data.

Hahn eventually received the 1944 Nobel Prize for the discovery. Meitner's name was absent from the award. But strip away every injustice in that sentence and the underlying fact remains: a woman who had been forced out of her country, her lab, and her collaboration looked at results that baffled a trained chemist and supplied the explanation that changed physics forever. The exile did not diminish the insight. If anything, it makes the clarity of her thinking more astonishing — she solved the central puzzle of the project from a thousand miles away, in a forest, on skis.

These moments accumulate into something past admiration: a complete restructuring of what you thought the history of science looked like. Nettie Stevens, working at the turn of the twentieth century, spent months carving gonads from mealworms into slices thin enough to dye and examine under a microscope. In those slides she found the chromosomal pattern — X and Y in male cells, X alone in female — that ended two thousand years of confident wrong answers about how sex is determined. Heat, maternal diet, the side of the bed you rolled out of: gone, replaced by a glass slide. Each of these discoveries stands on its own merits, independent of the circumstances. The barriers were real. The science was better.

Discrimination Didn't Just Insult Women — It Killed People

What is the actual cost of telling a brilliant scientist that her work is probably wrong because someone more credible would have caught it by now? Alice Evans has a precise answer to that question, and it is measured in human fevers.

In 1917, Evans was a bacteriologist at the US Department of Agriculture who had started her career as a bored rural schoolteacher and worked her way up through Cornell and the University of Wisconsin to study cheese. Examining slides one day, she noticed something that should have caught every earlier researcher's attention: two bacterial strains officially classified as entirely distinct — one that devastated cattle herds, one that caused weeks-long rolling fevers in humans — were nearly identical under the microscope. The classification error was historical and simple. The scientist who catalogued the human strain thought it was spherical, so he filed it with other spheres; the scientist who catalogued the cattle version thought it was rod-shaped, so he filed it with rods. No one had looked at them side by side and asked the obvious question. Evans did.

The response from her peers was not a rebuttal. It was a dismissal dressed as one. The near-universal reaction, as Evans recalled it, amounted to: if these two organisms were related, a man would have noticed before now. An influential epidemiologist was so offended by her findings that he refused to chair a committee she was on. Farmers accused her of running a scheme on behalf of pasteurization equipment manufacturers. The actual evidence — her experimental design, her results, the elegant explanation for why the classification error had persisted so long — barely came up.

So the findings sat. Evans published her paper in the Journal of Infectious Diseases in 1918. Independent confirmation trickled in over the following years. Mandatory milk pasteurization did not become law in the United States until the 1930s. The disease Evans had identified — Brucellosis, as the merged genus was eventually named — infected Evans herself in 1922, and she lived with its recurring effects for more than two decades. Every infection in those intervening years between her discovery and the regulatory change was, in principle, preventable.

The discrimination here was not only an insult to one woman's professional standing. It was a decision about whose deaths were acceptable. The institutional reflex to distrust a woman's findings extended the window during which contaminated raw milk moved freely into homes. The condescension had a body count.

Being Pushed to the Margins Sometimes Created the Breakthrough

Harvard told Helen Taussig she could attend the public health school — but she wouldn't receive a degree for it. She declined. That's where the story of the Blue Baby surgery begins: not with a breakthrough but with a door closing, and then another one, and then another one that turned out to lead somewhere no one had thought to go.

The uncomfortable logic running through Taussig's career requires holding two things at once: the discrimination was wrong, and it accidentally assembled the exact conditions required for one of the most consequential surgical breakthroughs of the twentieth century. That thesis matters enough to state before the story, because otherwise it reads like a consolation prize. It isn't.

Pushed sideways through Boston University and eventually Johns Hopkins, Taussig landed in 1930 as director of a pediatric cardiology clinic that her colleagues considered a dead end. Before open-heart surgery existed, you could identify a damaged heart but not fix it. Children died, and the autopsy answered questions you couldn't ask while the patient was still alive. Nobody with options wanted to spend a career there.

Taussig was not gathering data toward a foregone conclusion. She was gathering data because it was the only thing available to her, in the only specialty that would have her, using autopsies as the final entry in what she called her crossword puzzle diagnosis — triangulating cardiac defects through touch, electrocardiograms, and blood pressure readings, since her hearing had been deteriorating since her thirties and she could no longer use a stethoscope conventionally. Over a decade, she accumulated the most complete catalog of congenital heart defects anyone had assembled.

That catalog is what let her see something no one else had noticed: certain children with multiple heart abnormalities were surviving longer because a fetal vessel — the ductus arteriosus — had stayed open, routing enough blood to the lungs to keep them alive. Her inference was that surgeons could recreate this opening artificially to save blue babies starved of oxygen. When she brought the idea to a Harvard surgeon who had pioneered the procedure for closing the ductus, he told her flatly that he closed the things, he didn't create them. It took two more years of campaigning before she persuaded Johns Hopkins's new chief of surgery to try it. The Blalock-Taussig shunt, first performed in 1944, launched the entire modern era of pediatric cardiac surgery.

The system that blocked Taussig from cardiology's mainstream funneled her into a dead-end specialty where she spent a decade building the exact intellectual foundation the breakthrough required. That is not a silver lining. The years of closed doors were genuinely wasted years for patients who died before the surgery existed. But the mechanism is real and worth naming: institutional discrimination shaped the career, and the career shaped the discovery.

Credit Theft Was a Recurring Feature, Not a Bug

The theft of scientific credit was not a series of unfortunate incidents involving difficult men. It was a repeatable process with identifiable steps, and once you see the mechanism, you recognize it everywhere in these histories.

The Rosalind Franklin case is the cleanest example because the steps are all documented. Franklin spent years at King's College London producing meticulous X-ray images of DNA, including a crystalline photograph of the molecule's wet form — the clearest picture of DNA anyone had captured. She also wrote a detailed summary of her findings for a government committee. Neither document was intended for Watson and Crick at Cambridge. Both reached them anyway: the photograph passed along by her colleague Maurice Wilkins without her knowledge, the report forwarded by physicist Max Perutz without her consent. The two documents corrected specific technical errors Watson and Crick had been making about water content and the placement of phosphate chains — errors that had been blocking them. With Franklin's data filling in those gaps, they announced the double helix structure in 1953. Her name was not in that announcement. Years later, Watson published a memoir in which he casually noted that Franklin had not directly handed over her data — a throwaway admission that, once examined, described exactly what had happened. He meant it as a minor detail. It turned out to be the confession.

What makes this a system rather than a scandal is that the same mechanism runs through cases with no connection to Watson. Anna Wessels Williams isolated a strain of diphtheria bacteria 500 times more potent than anything previously available — a discovery that made mass production of the antitoxin possible and effectively ended a disease killing thousands of children annually. She made this breakthrough while her supervisor was on vacation. The strain was named Park-Williams No. 8. Common usage shortened it to Park 8. The institutional gravity of seniority did the rest without anyone making a conscious choice.

Meitner's erasure required slightly more active effort. She supplied the explanation for nuclear fission from exile — the ski-trip insight described earlier — but Hahn published without her name to avoid Nazi scrutiny, then later claimed the discovery as his own. He received the 1944 Nobel Prize. The mechanism combined wartime secrecy, institutional distance, and the social convention that the person at the bench owns the result regardless of who explained it.

Different fields, different countries, different centuries — the steps are consistent: proximity to power determined whose name stayed attached to the work. The seniority of a supervisor, the informality of a hallway conversation, the truncation of a laboratory strain name. No villain was required. The institution handled it.

The Obstacles Were Baroque — and the Women Routed Around Them Anyway

Alice Hamilton spent roughly a year walking around her laboratory with one pupil blown wide open and the other a normal pinpoint. The mismatched eyes were the experiment. She was trying to prosecute Chicago drugstore clerks who were selling cocaine to children — kids were smashing windows and shaking down strangers to fund the habit — but the prosecution kept collapsing because the available chemical test couldn't distinguish cocaine from a legal synthetic derivative called eucaine. Defense attorneys loved the loophole. Hamilton knew that cocaine applied to the eye dilates the pupil while eucaine does not. She tried the test on rabbits first. Juries took one look at the rabbits and forgot about the children. So Hamilton applied the powder to her own eye, over and over, building a body of human evidence that courtrooms couldn't dismiss. After a year of self-dosing, her colleagues stopped noticing the asymmetry entirely. The law was eventually amended to close the loophole.

Emmy Noether spent eight years at Erlangen without a salary or title, then moved to Göttingen and found her lectures listed under a male colleague's name because the administration wouldn't officially employ a woman. Her eventual formal title was 'unofficial, extraordinary professor' — a designation that paid nothing. When she finally received a salary, she was the lowest-paid person on the faculty. She kept teaching anyway. After the Nazis fired her in 1933, she tutored students out of her apartment, including some who showed up in full military uniforms. She had simply decided that the math was more important than the insult. This is not saintly forbearance — it is a specific kind of stubbornness, the refusal to let someone else's bad behavior become your stopping point.

What accumulates across these examples is not just admiration for the persistence but a reckoning with what each workaround cost. Hamilton's year of lopsided pupils. Noether's eight unpaid years. Chien-Shiung Wu canceling her twentieth-anniversary trip to China — sending her husband alone — to run an experiment that required sleeping four hours a night and brewing crystals in a student's kitchen, because the physics wouldn't wait and she knew someone else would get there first. She disproved a law of nature. The New York Post described her as 'small and modest.' The obstacles were baroque. So were the routes through them.

What Visibility Actually Does — and What Was Lost Without It

What happens when the people who might have inspired you never existed, as far as you could tell? Not because they weren't there, but because the system buried them thoroughly enough that they might as well not have been?

Eileen Pollack was one of the first two women to earn a physics degree from Yale. Decades later, she returned and found the math department's lobby gallery — a wall of faces representing the greats — without a single woman on it. The signal that space sent to every student passing through was not neutral. It was a statement about who belongs here, repeated daily, never requiring anyone to say it aloud.

That's the self-perpetuating mechanism Swaby is writing against. When women in science are invisible — obituarized as wives, credited to male supervisors, left off lobby walls — the next generation of girls receives a consistent message that science is not their natural territory. Fewer of them pursue it. Fewer of them are around to become visible. The absence reproduces itself without anyone needing to be consciously malicious.

Sally Ride broke that loop by existing publicly — floating through a shuttle cabin in footage that moved some viewers to tears — but her deeper contribution was intellectual. After the Challenger explosion, she was the only active NASA astronaut on the presidential review commission, and helped expose how casually the agency had been gambling with its crew's lives. Then she spent a year working with junior NASA staff to push back against the agency's old guard, who wanted the glamour of a Mars mission, in favor of something harder to make a poster about: using satellite technology to monitor Earth's climate as an interconnected system. She was a working scientist making consequential decisions, visible to everyone who was paying attention. That visibility did two things at once — it was justice for Ride, and it was the thing that made the next girl's choice feel possible rather than exceptional.

That is Swaby's central claim, stated plainest at the end: these fifty-two profiles are not a gesture toward fairness. They are the role models whose absence made the problem self-sustaining, now present. The cycle doesn't break by accident. It breaks when someone decides that the rockets come first.

The Names We Never Learned to Reach For

What these fifty-two profiles do, cumulatively, is give you more names to reach for. When a girl learns that Nettie Stevens solved a two-thousand-year-old question about sex determination using a mealworm and a microscope, the category "woman in science" stops feeling like an exception requiring explanation. It starts feeling like a place you could simply be. The absence was a choice. So is the filling of it. And here is the thing Swaby keeps returning to without quite saying it outright: we call every female scientist "the Marie Curie of her field" because we have exhausted our vocabulary. One name. One woman. One slot. That is not a tribute — it is a confession of how thoroughly the erasure worked. That's the whole argument, and it turns out to be a surprisingly simple one.