Magazine "History" · Reading time approx. 10 min

Four Nobel Prizes across two generations, a fifth awarded to a man who never did research himself — and, in the same family, two women who died of exactly what they had worked with. Anyone who reads the Curies only as a success story misses the structure behind it: a family that did not keep profession, choice of partner, and life risk separate across three generations.

A count that needs explaining

"The family with five Nobel Prizes" — the line appears in practically every short introduction to the Curies, and it is true. It is just more complicated than it sounds, and that complication is worth looking at before moving on.

Marie Skłodowska-Curie received the 1903 Nobel Prize in Physics jointly with her husband Pierre Curie and Henri Becquerel, for their work on radioactivity. In 1911, this time alone, came the Nobel Prize in Chemistry, for the discovery of the elements radium and polonium. That made her the first person ever to receive two Nobel Prizes. She remains, to this day, the only person honored in two different natural sciences. Pierre Curie died in 1906 in a traffic accident in Paris, run over by a horse-drawn cart. He did not live to see his wife's second prize. The family still holds the record for the most Nobel laureates of any family. No other family name appears so often on the prize lists, and no other family produced two married couples who were honored together.

Their daughter Irène Joliot-Curie and her husband Frédéric Joliot-Curie received the 1935 Nobel Prize in Chemistry, for the artificial production of radioactive elements — work that built directly on her parents' methods. Four prizes, four people, two married couples, two generations.

The fifth prize is a different case. In 1965, the Nobel Peace Prize went to UNICEF; it was accepted by the organization's then Executive Director, Henry Labouisse. Labouisse had been married since 1954 to Ève Curie, the younger daughter of Marie and Pierre — the daughter who never became a scientist herself. The prize went to an organization, not to a family member. The connection to the family runs through a marriage, not through any research of her own. "Five Nobel Prizes in the family" is therefore an accurate but composite count. Translating it into four prizes earned directly plus a fifth reached through a husband belongs to any honest telling. This is not about diminishing the superlative. A genogram demands exactly this kind of precision: who actually earned the prize for what, and who is connected to it only through a relationship?

Marriage as laboratory

What links the first and second generations of Curies is more than a shared surname. Marie and Pierre met in Paris in 1894, through physics. They married in 1895 and, from the start, worked in the same makeshift shed on the same question. The 1903 Nobel Prize was accordingly not an individual achievement but a joint one, and it was honored as such.

Irène literally grew up in her mother's laboratory. She began working early at the Institut du Radium in Paris, which Marie had founded. There she met Frédéric Joliot, who had come to work as Marie Curie's assistant. The two married in 1926 — and adopted a shared double surname, Joliot-Curie, an act that visibly bound family identity and scientific work together. Here too, as in the generation before, the choice of spouse coincided with the choice of research partner. And here too, the shared work ended in a shared Nobel Prize.

In a genogram, this shows up as a pattern too consistent to be coincidence. It is a family in which the boundary between couple relationship and working relationship was, for two consecutive generations, effectively suspended. Anyone who works with couple dynamics knows families in which profession and partnership are tightly interwoven — usually with tensions that arise from exactly that closeness. What stands out with the Curies is that the pattern was not merely repeated but institutionally reinforced. The institute Marie built was, at the same time, the place where her daughter met her husband and where both built their own careers.

Profession as family identity

The inheritance actually at issue here is not biological — it is the passing on of a profession as family identity. The Institut du Radium, later part of the Institut Curie, remained a family enterprise for decades, in both the best and the most burdensome sense. Marie led it until her death. Irène continued her own research there and later also took on political responsibility. In 1936 she briefly served as Undersecretary of State for Scientific Research in the French government of Léon Blum — one of the first women ever to hold office in a French government. After the war, Frédéric became France's first High Commissioner for Atomic Energy, a post he later lost for political reasons.

The third generation, too, stayed in science: Hélène Langevin-Joliot, daughter of Irène and Frédéric, became a nuclear physicist. Her brother Pierre Joliot became a biochemist and a member of the Académie des sciences. Three generations that do not merely resemble one another but choose, almost without exception, the same professional path — that is a striking pattern in a genogram. It resembles families in which a particular occupation, trade, or role "simply belongs" to them, with no one ever saying out loud why, exactly, everyone follows the same course.

What is telling here is what stayed the same and what changed. The place remained constant — the institute Marie founded shaped three generations as a workplace, a meeting point, and, through the marriages, also as a place where partners were chosen. The specific role, by contrast, shifted from generation to generation: Marie was founder and sole authority, Irène a researcher and briefly a member of government. The grandchildren's generation, finally, were scientists pure and simple, without their grandmother's founding or symbolic function. A genogram that notes only the profession would miss this shift. It requires a look at each person's position within the system, not just at the job title.

The price: what radiation-related illness means — and what it does not

Here the Curies' story demands particular care, because two facts must be allowed to stand side by side, without either crowding out the other.

Marie Curie died on 4 July 1934 of aplastic anemia, a condition in which the bone marrow no longer produces enough blood cells. The cause was decades of exposure to ionizing radiation — in the laboratory, where radium and polonium were handled without any protection. She was also exposed during the First World War, when she organized and personally operated mobile X-ray units at the front. Around twenty of these so-called "petites Curies" — repurposed vehicles fitted with X-ray equipment — went to the front with her involvement, along with roughly 200 stationary X-ray installations in field hospitals. Marie, and for a time the teenage Irène, were among the very few who trained the staff for this work and operated the equipment themselves. Their notebooks from that period are still radioactive today and, according to experts, will remain so for roughly another 1,500 years.

Irène Joliot-Curie died on 17 March 1956 of leukemia, likewise a consequence of years of radiation exposure. This was made worse by a 1946 laboratory accident, in which a polonium capsule exploded and exposed her to an acute dose. Her husband Frédéric died two years later, in 1958, of a liver condition that, by current understanding, is also linked to his long occupational exposure to radiation.

What recurs here across two generations is not a hereditary disease. It is an occupational illness that repeated within a family because the occupation itself was passed down within the family. It was not a sensitivity to radiation that was inherited, but the workplace in which one was exposed to it for decades. This distinction is not pedantry. It determines what a genogram is entitled to show here at all: not a genetic risk, but a pathway of transmission running through role, place, and activity. It is the same kind of pattern one reckons with in practice — the kind that appears when the same business, the same trade, or the same hazardous activity is handed down through a family across generations.

Hypothetical case example: A family comes in for counseling because the 19-year-old son does not want to take over his father's roofing business. The grandfather had already founded the company; the father kept it running despite a herniated disc in his early forties. The genogram shows: across three generations, no man in this family ever trained in a different trade. No one ever decided that physically risky work belonged to the family — it was simply passed on each time, along with the name over the workshop door. The son's refusal only becomes understandable once this transmission is made visible, not as a question of character.

Here too, a sober look at the numbers is worthwhile before speaking of a "cursed element." Pierre Curie, first in the line, did not die of radiation but, in 1906, in an ordinary road accident. Even within the first generation, then, the radiation-related fate did not befall everyone. That is a reminder that here too, as so often, the obvious simplification does not quite hold up.

Ève Curie: the one who did not do research

The younger daughter, Ève Curie, born in 1904, took a different path. She became a pianist, then a journalist and author. Her 1937 biography of her mother, "Madame Curie," became a worldwide bestseller and remains, to this day, a widely read source on Marie's life, even if shaped by a daughter's love. Ève later worked as a war correspondent and, after marrying Henry Labouisse in 1954, in diplomatic roles at his side. She died in 2007 at the age of 102. Unlike her sister Irène and Irène's husband, she was affected neither by radiation sickness nor did she ever go into science.

In a genogram, an exception like this is never a mere footnote. It shows just how strong the rule was for everyone else, precisely because one person visibly steps outside it. Ève Curie chose neither the laboratory nor, as far as is known, a particularly risk-laden life, and became by far the longest-lived member of the family. Just as remarkable is the twist her biography takes at the very end: it is precisely through her, the family's only non-scientist, that the connection to its fifth Nobel Prize runs. That connection came not through research of her own, but through marriage to a man whose humanitarian career had nothing to do with physics. The exception to the rule thus becomes, at the same time, an entirely different link to the very same honor the family otherwise reached through science.

The Langevin arc: when family lines cross again

One of the most remarkable entanglements in this family's history spans two generations and only becomes visible in the kind of side-by-side view a genogram provides.

In 1910 and 1911, several years after Pierre's death, the widowed Marie Curie had a relationship with the physicist Paul Langevin. He was a married colleague and a former student of her husband. When the affair became public, it set off a genuine scandal in the French press — in the very weeks in which her second Nobel Prize was announced. The scandal carried openly xenophobic and misogynistic undertones, since Marie was regarded as a Polish immigrant. She traveled to Stockholm anyway, to accept the prize in person. In her reply to the Nobel Committee, which had advised her against making the trip, she drew a clear line between her private life and her scientific achievement.

Two generations later, a circle closes that no one in this family could have planned. Hélène Langevin-Joliot, Marie's granddaughter through Irène and Frédéric, married Michel Langevin — the grandson of Paul Langevin. Two families linked in 1911 by a public scandal became, generations later, actual relatives through a perfectly ordinary marriage. In running text, this reads like a curious footnote. In a genogram, where both lines sit side by side, it becomes a connection that reaches beyond the story itself — a vivid example of how relationships one generation considers closed can, in the next, resurface in ways no one planned.

What practitioners can take from this

The Curies offer no example of inheritance in the biological sense, and no curse either. What shows up across three generations is something that appears in genogram-based work far more often than the dramatic single case. It is a profession that becomes family identity, passed on through choice of partner, shared workplaces, and the pull of example — with everything that comes with it, including the risk one is exposed to for decades in the process.

For practice, this means: wherever a family "simply hands down" a profession, a business, or a calling, it is worth looking closely at what travels along with it. It is not only skills and status that move from one generation to the next. Sometimes burdens travel along too — burdens no one decided on individually, but that arise from repeatedly choosing the same environment. And where a person steps outside the pattern — as Ève Curie did — it is worth looking closely rather than setting them aside as the exception. Often it is precisely that person who reveals how strong the rule was for everyone else.

It is equally worth looking at the couple relationships themselves. Twice, this family chose the same person as both spouse and working partner. That is a pattern that may well have contributed to professional success, and one that also meant there was hardly a sphere of life that was not also a professional one. For couples in counseling who work together or run a business together, it is often exactly this fusion that becomes the point where conflicts arise — conflicts that cannot be resolved as purely private or purely professional, because in the family's lived reality, the dividing line between the two does not exist at all.

The genogram suits families like this particularly well, because it does not treat professional identity, choice of partner, and health burden as separate matters. It shows them for what they really are: lines that shape one another across generations. The Curies are, like the other families in this series, no special case. They are simply an unusually well-documented example of something found, on a smaller scale, in many families — where people are held together by a profession, a business, or a shared calling.