In this episode of Lost Women of Science Conversations, host Carol Sutton Lewis speaks with science writer Hanne Strager about her biography of Inge Lehmann, the pioneering Danish seismologist who discovered that Earth has a solid inner core.. 

Largely unknown outside scientific circles, Lehmann fundamentally transformed our understanding of what lies at the heart of our planet. She did this in 1936 by identifying anomalies in earthquake waves that others had overlooked. At the time, scientists believed Earth’s core was entirely liquid. Lehmann proposed instead that a solid inner core lay hidden within it — a groundbreaking insight that reshaped geophysics.

In revisiting Lehmann’s story, Strager highlights that Lehmann’s legacy is one of resilience and perseverance — proof that early setbacks do not define a life, and that brilliance can flourish, even later in life.

This bonus episode is a co-production with Distillations, a podcast produced by the Science History Institute.

Agnes Pockels did pioneering work in surface science. Her invention, the Pockels Trough, became the basis for an instrument that helped Katherine Burr Blodgett and Irving Langmuir make discoveries in material science that quietly shape our everyday world. 

But the way we talk about Agnes’s life and work often falls back on familiar tropes about women’s domestic roles, assumptions about how science gets done, and what it looked like to do science as a woman in the 19th century. 

 Agnes's story invites us to rethink how we define success for scientists. Is our definition too narrow? And what might we gain if we crack it open a bit wider? 

How is a legacy preserved, and how is someone forgotten? Determined to make a final name for himself, Irving Langmuir ventures into science that even he might classify as pathological wishful thinking, while Katharine continues her work as the diligent experimenter. But her contributions faded from both the company’s and the public’s memory. We go to visit her, to say good-bye – and we look at the wisdom she imparted to the next generation of ​​inquiring minds. 

Katharine’s relatives lead the production team to a collection of papers and artifacts stored in a New England storage unit, revealing an inner struggle she kept carefully out of sight – even as she was making history in the laboratory.

The 1930s prove to be an exceptional decade for research at The General Electric Company. Katharine Burr Blodgett works closely alongside her boss, Irving Langmuir who, in 1932, wins the Nobel Prize for Chemistry. In 1938, Katharine’s meticulous experiments with thin film coatings on solid surfaces lead to her most important breakthrough: non-reflecting glass. The General Electric Company’s public relations machine kicks into high gear. Katharine becomes an overnight sensation, both in the scientific community and in the press, which dub her discovery “invisible glass.” The assistant to the Nobel Prize winner, long invisible herself, takes center stage. 

The only woman in a laboratory filled with men, Katharine Burr Blodgett soon becomes indispensable as an assistant to The General Electric Company’s most famous scientist, Irving Langmuir. Their working relationship is an elegant symbiosis: her forte is experimentation, his is scientific theory. We follow their partnership as they successfully find ways to build a better lightbulb but Langmuir stumbles with an off-the-wall theory of matter. All the while, Katharine builds her life in Schenectady: going to church, making new friends, falling in love. In 1924, she embarks on a new journey to the University of Cambridge, where she studies with some of the most prominent physicists of the 20th century. 

Katharine Burr Blodgett arrives at The General Electric Company’s legendary research laboratory in Schenectady, New York, known as the “House of Magic.” She was just 20 years old when she entered a world built almost entirely for men. She joins as assistant to the brilliant and eccentric Irving Langmuir, a star chemist whose fundamental work in materials science and light bulbs would bring fame to him, and fortune to GE. 

The General Electric Company was an obvious choice for a brilliant young scientist. But was it the promise of scientific discoveries that drew Katharine to Schenectady or the need to confront the personal tragedy that marked the place where her own story began? Perhaps it was both.

In the first of this five-part season we trace Katharine’s early years as she picks up European languages, her early scientific education at a progressive New York school for girls and then Bryn Mawr, a women’s college. She seems destined to end up working at the General Electric Company’s industrial research lab, but first she must prove herself at the University of Chicago, where, in the middle of World War I, she works to improve the life-saving gas mask. 

Introducing Layers of Brilliance, a six-part season that brings to life the story of a woman whose discoveries in materials science quietly shape our everyday world – but whose legacy was long eclipsed by the famous scientist she worked with.

In 1918, at just twenty years old, Katharine Burr Blodgett arrived at the General Electric Company’s industrial research laboratory in Schenectady, New York – a place known as the House of Magic. There she began a decades-long collaboration with Irving Langmuir, GE’s star scientist, who would go on to win the Nobel Prize in Chemistry. While Langmuir became a public figure, Blodgett became something else: the mind and hands behind experiments so delicate they operated at the scale of single molecules.

Blodgett’s work on films just one molecule thick would lead to multiple U.S. patents and form the basis of technologies embedded in today’s screens, optics, and electronics.

Listen as we peel back the layers of Katharine Burr Blodgett’s life – how she made groundbreaking science inside a world built for men, how she struggled against profound personal challenges, and how a woman whose work helped shape modern materials science nearly disappeared from history.

The Lost Women of Science by Melina Gerosa Bellows and Katie Hafner is an exciting book for young readers that brings to life the stories of ten remarkable women who changed the world of science but have been forgotten, or written out of history completely. Published by Penguin Random House’s Bright Matter imprint, the book transforms podcast episodes into a collection of inspiring biographies written for middle school readers. 

In this Lost Women of Science Conversation, Melina and Katie talk about their favorite female scientists and why their grit and determination can help inspire curiosity in the next generation of young female (and male) scientists. For parents, teachers or grandparents looking to spark a love of science in the young people in their lives, look no further than this book this holiday season.