“Thank You for the Flowers!” – Who Gets Remembered in Science?

Four Stories of Overlooked Women Scientists

Science has always fascinated me—not only because of the discoveries themselves, but also because of the people behind them.

When we think about the scientists who changed the world, certain names appear almost immediately.

But the stories we know are not always the whole story.

The history of women in science is full of contributions that became part of the discoveries we remember, even when the women behind them did not become equally well known.

Name a few brilliant scientists who changed the world.

How many can you think of?

Now name a few brilliant female scientists who changed the world.

Perhaps Marie Curie comes to mind first. After that, the list may become shorter.

This is not because women were absent from science. Scientific discoveries are usually made by teams, yet history often turns them into simple stories about individual heroes.

And when that happens, some names are much more likely to remain than others.

Here are four such stories.

Four Stories Behind the Discoveries We Remember

1 – When Discovery Is Only the Beginning: Margaret H. Rousseau and Penicillin

You have probably heard the story of Alexander Fleming and the discovery of penicillin.

In 1928, Fleming noticed that a mould growing in one of his Petri dishes had stopped the bacteria around it from growing. His observation became one of the most famous moments in the history of medicine.

But noticing the effect of penicillin and turning it into a medicine that could be produced in large quantities were two very different challenges.

Researchers Howard Florey, Ernst Chain and their colleagues at Oxford later showed that penicillin could be used to treat bacterial infections. Scientists, engineers, government laboratories and pharmaceutical companies then had to find a way to produce enough of it for more than a small number of patients.

This is where Margaret Hutchinson Rousseau entered the story.

She was the first woman in the United States to receive a doctorate in chemical engineering, which she earned from MIT in 1937.

Rousseau contributed to Pfizer’s efforts to scale up penicillin production. She played an important role in designing the first commercial plant that used deep-tank fermentation to produce the drug. This technology helped turn penicillin from a scarce experimental treatment into a medicine that could be made on a much larger scale.

Rousseau did not achieve this alone. Mass production depended on microbiologists, chemists, engineers, factory workers and many others. But her work was an essential part of this much larger effort.

Fleming’s discovery deserves to be remembered. But the discovery in the Petri dish was only the beginning of the story.

A medicine can change the world only when someone finds a way to bring it out of the laboratory.

2 – What Photograph 51 Could Not Show: Rosalind Franklin and DNA

Rosalind Franklin arrived at King’s College London in 1951 with experience in X-ray diffraction—a method that scientists could use to study the structure of molecules.

At King’s, she studied DNA together with her doctoral student Raymond Gosling. By carefully controlling the amount of water in their DNA samples, Franklin showed that DNA could exist in two different forms. In May 1952, she and Gosling produced the X-ray diffraction image that became known as Photograph 51.

The clear X-shaped pattern in the image offered strong evidence that DNA had a helical structure.

Maurice Wilkins, another researcher at King’s, later showed the photograph to James Watson without Franklin’s knowledge. Watson and Francis Crick were working on their own model of DNA at the University of Cambridge. Franklin’s experimental results, together with other information available to them, helped Watson and Crick build their double-helix model.

In April 1953, Nature published three papers on the structure of DNA: one by Watson and Crick, one by Wilkins and his colleagues, and one by Franklin and Gosling.

In 1962, Watson, Crick and Wilkins received the Nobel Prize in Physiology or Medicine for discoveries concerning the molecular structure of DNA.

Franklin had died four years earlier, at the age of 37. Nobel Prizes are not awarded after a person’s death, so we cannot know whether she would have shared the prize had she lived.

But her contribution was also not limited to a single photograph.

Her careful experiments, measurements and understanding of the different forms of DNA provided important evidence for the structure that Watson and Crick proposed.

Photograph 51 has now become famous.

The precise and patient scientific work behind it is easier to overlook.

3 – When Nature Refused Its Reflection: Chien-Shiung Wu and Parity

For many years, physicists believed that the laws of nature should remain the same when seen in a mirror.

This idea was known as the conservation of parity.

In 1956, theoretical physicists Tsung-Dao Lee and Chen Ning Yang examined the available evidence and realised that parity had never been properly tested in processes involving the weak nuclear force. They suggested several experiments that could answer the question.

They then approached Chien-Shiung Wu, one of the leading experimental physicists of her time.

Wu designed and led a demanding experiment using radioactive cobalt-60. The atoms had to be cooled to extremely low temperatures and placed inside a magnetic field. Wu and her colleagues then observed the direction in which electrons were released as the cobalt atoms decayed.

The results showed that nature did not behave in the same way as its mirror image during this type of radioactive decay. Parity was not conserved in weak interactions. Other experiments carried out at around the same time soon confirmed the result.

In 1957, Lee and Yang received the Nobel Prize in Physics for their investigation of the laws of parity. Wu and the team that performed the cobalt experiment were not included.

There is an obvious explanation: Lee and Yang developed the theoretical idea, while Wu tested it experimentally.

But science needs both.

Without the theory, there may have been no reason to perform the experiment. Without the experiment, the theory would have remained an interesting possibility.

The discovery was not made by theory instead of experiment, or by experiment instead of theory. It happened because the two came together.

Yet only one part of that story received the Nobel Prize.

4 – The Signal Hidden in the Noise: Jocelyn Bell Burnell and Pulsars

In 1967, Jocelyn Bell Burnell was a postgraduate student at the University of Cambridge.

She had helped build a large radio telescope designed to study signals from distant objects in space. The telescope produced long paper charts, which Bell Burnell examined by hand.

Among the large amount of data, she noticed an unusual signal—a small piece of “scruff” that appeared in the same part of the sky.

She returned to it, collected more data and found that the signal consisted of remarkably regular pulses. Bell Burnell, her supervisor Antony Hewish and the rest of the research team worked to rule out equipment problems, human-made interference and other possible explanations.

They eventually found more signals of the same kind. These objects became known as pulsars: rapidly rotating neutron stars that send beams of radiation across space, almost like cosmic lighthouses.

In 1974, the Nobel Prize in Physics was awarded to Martin Ryle and Antony Hewish. Ryle was recognised for his work on radio astronomy, while Hewish was recognised for his decisive role in the discovery of pulsars. Bell Burnell was not included.

Bell Burnell herself has often spoken about the decision more generously than many people who later commented on it. She has explained that she was a research student at the time and has said that her colleagues were more upset about the Nobel Prize than she was.

Her response does not make the question of scientific recognition any less worth exploring.

She was the person who noticed the signal hidden among pages and pages of data. She recognised that it was unusual, returned to it and continued investigating it.

The work belonged to a team.

But the ability to notice that something did not belong—to look closely enough and remain curious enough to follow it—was hers.

Whose Names Do We Remember?

These four stories are not identical.

They cannot be reduced to a simple formula in which women did all the work and men received all the credit.

Science rarely works like that.

There were teams, difficult experiments, important theories, supervisors, students, engineers and institutions. Each person contributed something different. There were also different rules, customs and expectations in each period.

But there is still a pattern worth noticing in the way scientific recognition is shaped.

Scientific discoveries are complicated. The stories we later tell about them are usually much simpler.

Over time, years of shared work become one moment. A team becomes a handful of names. And those names become the face of an entire discovery.

The question is not whether Fleming, Watson and Crick, Lee and Yang, or Hewish and Ryle deserve to be remembered.

They do.

The question is whether the story should end with them.

Perhaps the answer is not to replace one scientific hero with another. It is to remember that science has always been more collaborative, more complicated and more human than the short stories we tell about it.

And perhaps, the next time we try to name the people who changed the world, a few more names will come to mind—and I hope that more of them will be the names of women.

Authorship and use of AI
This article is based on my own research, thinking, and editorial work. I used artificial intelligence as a support tool during the writing process, mainly for structuring the text, improving clarity, and, where relevant, translating it into English. All key decisions, interpretations, and the final version of the text are my own.

FURTHER READING:
– Penicillin History, Wikipedia
–Margaret Hutchinson Rousseau
– Discovery of a DNA structure, Wikipedia
– Cobb, M. & Comfort, N. What Rosalind Franklin Truly Contributed to the Discovery of DNA’s Structure. Nature (2023)
– Landmarks—Breaking the Mirror
– Parity experiment, Wikipedia
– Jocelyn B. Burnell and Pulsars, Wikipedia