More and more women in the United States are saying no to motherhood. In 2023, the U.S. fertility rate reached the lowest number on record. But the idea of non-motherhood is actually not a new phenomenon, nor did it come out of the modern feminist movement. For centuries, women have made choices about limiting births and whether or not to become mothers at all. This history is documented in a new book, "Without Children: The Long History of Not Being a Mother," by University of Chicago Assistant Instructional Professor Peggy O'Donnell Heffington.

Heffington writes about the historic trends of non-motherhood as well as the modern factors that are playing a role in women's choices to not have children today — from lack of structural support in the workplace, to a national law for paid maternity leave, and the sheer lack of affordability. She writes that if these trends continue, American millennials could become the largest childless cohort in history.

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What does it mean to see beneath the surface — of the human body, the brain, or even the universe itself? In his new book, The Future of Seeing: How Imaging Is Changing Our World, Prof. Daniel Sodickson of NYU explores the future of imaging: How technology is transforming not just medicine, but our very ways of perceiving the world. With the rise of AI-driven “digital vision,” Sodickson, a pioneer of MRI innovation, argues that imaging is no longer just a diagnostic tool — it’s becoming a new language of discovery.

In this conversation, Sodickson explores the promises and pitfalls of this promising new technology. Reflecting on the history of scientific discovery, we examine what the next generation of imaging might reveal about life itself.

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Few ideas have gripped the public imagination quite like the idea of the “psychopath.” From Hollywood thrillers to true-crime podcasts, popular culture has led us to believe that psychopaths are dangerous and biologically distinct from the rest of us. But what if almost everything we think we know about them is wrong?

In this episode, we talk with Rasmus Rosenberg Larsen, an Assistant Professor of Forensic Epistemology at the University of Toronto and author of "Psychopathy Unmasked," whose research is challenging the very foundation of psychopathy as a diagnosis. Larsen explains how the term “psychopath” is relatively new, dating to the Ted Bundy trial in the 1970s, and how TVs and movies have skewed our understanding of the “psychopath.” He discusses psychopathy tests, their impact on the criminal justice system—and what the latest science reveals about the minds we’ve long misunderstood.

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