Science Salon

When you are faced with a decision, do you consider the best outcome, or do you consider your deepest values about which actions are appropriate? Steven Sloman contrasts these two primary strategies for making decisions: consequentialism or prioritizing one’s sacred values. He argues that, while both modes of decision making are necessary tools for a good decision maker, people err by deploying sacred values more often than they should, especially when it comes to sociopolitical issues. As a result, we oversimplify, grow disgusted and angry, and act in ways that contribute to social polarization. Drawing on historical and current examples of the two decision-making strategies in action, Sloman provides a thorough overview of the psychology of decision making, including work on judgment, conscious and unconscious decision-making processes, the roles of emotion, and even an analysis of habit and addiction. Steven Sloman has taught at Brown University since 1992. He is the author of Causal Models and a coauthor

Michael Shermer in conversation with Debra Soh at FreedomFest 2025 in Palm Springs, CA. Video courtesy of FreedomFest. Additional FreedomFest videos can be viewed on CiVL.

Drawing from intensive on-the-ground reporting in Israel, Gaza, and Lebanon, Douglas Murray places the latest violence in its proper historical context. He takes listeners on a harrowing journey through the aftermath of the October 7 massacre, piecing together the exclusive accounts from victims, survivors, and even the terrorists responsible for the atrocities. Douglas Murray is a bestselling author and journalist. His books include the Sunday Times number-one bestsellers The War on the West: How to Prevail in the Age of Unreason; The Strange Death of Europe: Immigration, Identity and Islam; and The Madness of Crowds: Gender, Race and Identity. He has been Associate Editor and regular writer at The Spectator since 2012, and contributes to other publications, including the Wall Street Journal, The Times, the Sunday Times, the Sun, the Mail on Sunday and the New York Post. A regular guest on broadcast news channels, he has also spoken at numerous universities, parliaments, and the White House. His new book is

Do any of us really care about truth when it comes to politics? Should we? In a world of big lies, denialism, and conspiracy theories, democracies are experiencing two interlocked crises: a loss of confidence in democracy itself and the growing sense among many that politics is only about power—not truth. In his new book, Michael Patrick Lynch argues that truth not only can—but must—matter in politics. He shows why truth is an essential democratic value—a value we need to sustain our democratic way of life—and how it can be strengthened. Despite evidence that people are rarely motivated by truth when it comes to politics, Lynch argues that this isn’t inevitable. Contrary to the belief of many, political beliefs can be true or false. But if democracy is to continue to be a space of reason and not just an arena of power, we must build a better infrastructure of knowledge, including stronger schools and media, and renew our commitment to science and history. Michael Patrick Lynch is Provost Professor of the Huma

A debate on the mind, soul, consciousness, and the afterlife. Michael Egnor, MD, is Professor of Neurosurgery and Pediatrics at the Renaissance School of Medicine at Stony Brook University. He received his medical degree from the College of Physicians and Surgeons at Columbia University and trained in neurosurgery at the University of Miami. He has been on faculty at Stony Brook since 1991. He is the neurosurgery residency director and has served as the director of pediatric neurosurgery and as vice-chairman of neurosurgery at Stony Brook Medicine. He has a strong interest in Thomistic philosophy, philosophy of mind, neuroscience, evolution and intelligent design, and bioethics and has published and lectured extensively on these topics. His new book is The Immortal Mind: A Neurosurgeon’s Case for the Existence of the Soul. Christof Koch is a neuroscientist at the Allen Institute and at the Tiny Blue Dot Foundation, the former president of the Allen Institute for Brain Science, and a former professor at the Ca

When award-winning science writer Amy Alkon was blindsided by her first hot flash, it kicked off a cascade of symptoms—drenching night sweats, insomnia, and a rage she couldn’t explain. But what shocked her more was how little real science her doctor had to offer. In this episode, Alkon shares what she uncovered in her deep dive into the research on menopause and perimenopause—the critical yet often neglected years leading up to menopause when millions of women are misdiagnosed, dismissed, or simply told to “wait it out.” Drawing from her new book Going Menopostal, she explains why so much medical advice is still based on outdated or inadequate evidence, and what women can do about it. Alkon breaks down complex science with clarity, humor, and a healthy dose of skepticism, giving listeners the tools they need to ask better questions, advocate for themselves, and get the care they deserve. Whether you’re in the thick of it or simply want to be prepared, or want to support your loved ones going through menopaus

What began as a call for justice has, in many cases, become an engine of conformity. In this searching conversation, Andrew Doyle (author, satirist, and cultural critic) joins Michael Shermer to unpack the trajectory of the woke movement: from its roots in anti-bigotry and awareness to its current entanglement with censorship, identitarian dogma, and ideological rigidity. Drawing on his new book, The End of Woke Doyle traces the intellectual history of contemporary activism, explores the authoritarian impulses emerging on both the left and the right, and makes the case for a return to classical liberalism as a defense against escalating cultural tribalism. Together, Shermer and Doyle explore themes ranging from the legacy of Shakespeare and Milton, the tension between equality and meritocracy, and the broader sociopolitical dynamics shaping public discourse. This episode offers a sharp, historically grounded analysis of one of the defining cultural shifts of our time—and a call to revive liberal principles in

Since the dawn of the Industrial Revolution, capitalism has unleashed unimaginable growth in opportunity and prosperity. And yet, at key points in American history, economic disruption has led to a greater role for government, ostensibly to protect against capitalism’s excesses. Today, government regulates, mandates, subsidizes and controls a growing share of the American economy. Today on the show, retired U.S. Senator Phil Gramm, one of America’s premier public policy advocates, and noted economist Donald J. Boudreaux look at the seven events and issues in American history that define, for most Americans, the role of government and how the 21st century world works. To many, these 5 periods of American history—the Industrial Revolution, Progressive Era, Great Depression, decline of America’s postwar preeminence in world trade, and the Great Recession—along with the existing levels of income inequality and poverty, represent strong evidence for expanding government in American life. Gramm and Boudreaux argue

By most popular accounts, the universe started with a bang some 13.8 billion years ago. But what happened before the Big Bang? And how do we know it happened at all? Cosmologist Niayesh Afshordi and science communicator Phil Halper offer a tour of the peculiar possibilities: bouncing and cyclic universes, time loops, creations from nothing, multiverses, black hole births, string theories, and holograms. Incorporating insights from Afshordi’s cutting-edge research and Halper’s original interviews with scientists like Stephen Hawking, Roger Penrose, and Alan Guth, Afshordi and Halper compare these models for the origin of our origins, showing each theory’s strengths and weaknesses and explaining new attempts to test these notions. But most of all, Afshordi and Halper show that this search is filled with wonder, discovery, and community—all essential for remembering a forgotten cosmic past. Niayesh Afshordi is professor in the Department of Physics and Astronomy at the University of Waterloo and associate facult

In 2010, in a small New Hampshire town, next door to a copy center and framing shop, a ghost lab opened. The Kitt Research Initiative’s mission was to use the scientific method to document the existence of spirits. Founder Andy Kitt was known as a straight-shooter; he was unafraid—perhaps eager—to offend other paranormal investigators by exposing the fraudulence of their less advanced techniques. But when KRI started to lose money, Kitt began to seek funding from the paranormal community, attracting flocks of psychics, alien abductees, witches, mediums, ghost hunters, UFOlogists, cryptozoologists and warlocks from all over New England, and the world. And there were plenty of them around. Matthew Hongoltz-Hetling, author of the new book The Ghost Lab, explains the wild ecosystem of paranormal profiteers and consumers through the astonishing story of what happened in this one small town. He also maps the trends of declining scientific literacy, trust in institutions, and the diffusion of a culture that has crea

This is the inside story of the CIA’s secret mind control project, MKULTRA, using never-before-seen testimony from the perpetrators themselves. Sidney Gottlieb was the CIA’s most cunning chemist. As head of the infamous MKULTRA project, he oversaw an assortment of dangerous―even deadly―experiments. Among them: dosing unwitting strangers with mind-bending drugs, torturing mental patients through sensory deprivation, and steering the movements of animals via electrodes implanted into their brains. His goal was to develop methods of mind control that could turn someone into a real-life “Manchurian candidate.” In conjunction with MKULTRA, Gottlieb also plotted the assassination of foreign leaders and created spy gear for undercover agents. The details of his career, however, have long been shrouded in mystery. Upon retiring from the CIA in 1973, he tossed his files into an incinerator. As a result, much of what happened under MKULTRA was thought to be lost―until now. Historian John Lisle has uncovered dozens of d

In this eye-opening episode, Michael Shermer chats with evolutionist Telmo Pievani about the surprising coexistence—and hybridization—of Neanderthals and Homo sapiens. They discuss recent scientific discoveries, the evolving understanding of race and biology, and the crucial role of serendipity in advancing scientific knowledge. This episode offers a nuanced perspective on how unexpected findings continue to reshape our understanding of human origins and the scientific process itself. Telmo Pievani is Full Professor in the Department of Biology at the University of Padua, where he covers the first Italian chair of Philosophy of Biological Sciences. A leading evolutionist, science communicator, and columnist for Corriere della Sera, he is the author of The Unexpected Life, Creation Without God, and Imperfection (MIT Press). His new book is Serendipity: The Unexpected in Science.

Amid rising concerns about AI, inequality, trade wars, and globalization, New Yorker staff writer and Pulitzer Prize finalist John Cassidy takes a bold approach: he tells the story of capitalism through its most influential critics. From the Luddites and early communists to the Wages for Housework movement and modern degrowth advocates, Cassidy’s global narrative features both iconic thinkers—Smith, Marx, Keynes—and lesser-known voices like Flora Tristan, J.C. Kumarappa, and Samir Amin. John Cassidy has been a staff writer at The New Yorker since 1995. He writes a regular column, The Financial Page. He holds degrees from Oxford, Columbia, and New York Universities. His new book is Capitalism and Its Critics: A History from the Industrial Revolution to AI.

What does your diet have to do with your mood? Is mercury in fish really dangerous? Psychiatrist Dr. Drew Ramsey joins Michael Shermer to discuss the science behind nutritional psychiatry and how food, sleep, exercise, and social habits influence brain health. They explore why mental health issues are rising—especially among teens—and what role parenting, social media, and modern lifestyles play. The conversation also covers the effectiveness of SSRIs and other treatments, the role of inflammation in mental health, and the importance of sleep and tracking sleep quality. Drew Ramsey, MD is a board-certified psychiatrist, author, and leading voice in Nutritional Psychiatry and integrative mental health. He is a Fellow of the American Psychiatric Association. For twenty years, he served as an assistant clinical professor of psychiatry at Columbia University. He has authored four books, including the international bestseller Eat to Beat Depression and Anxiety. His new book is Healing the Modern Brain.

Jacob Mchangama, author of Free Speech: A History from Socrates to Social Media, joins Michael to examine the evolving landscape of free expression amid rising political and cultural tensions. They discuss how far governments, universities, and tech platforms should go in regulating speech, and what’s at stake when they do. In this episode: Should non-citizens have the same speech protections as citizens? Social media, mental health, radicalization, and the “moderation dilemma” The global shift toward stricter regulation of speech How today’s most divisive issues test the limits of free expression Jacob Mchangama is the founder and executive director of the Future of Free Speech, professor at Vanderbilt University, and senior fellow at the Foundation for Individual Rights and Expression (FIRE).

Is it really possible to change your entire personality in a year? An award-winning journalist experiments with her own personality to find out—and reveals the science behind lasting change. Research shows that you can alter your personality traits by behaving in ways that align with the kind of person you’d like to be—a process that can make you happier, healthier, and more successful. Olga embarked on an “experiment” to see whether it’s possible to go from dwelling in dread to radiating joy. For one year, she clicked “yes” on a bucket list of new experiences—from meditation to improv to sailing—that forced her to at least act happy. With a skeptic’s eye, Olga brings you on her journey through the science of personality, presenting evidence-backed techniques to help you change your mind for the better. Olga Khazan is a staff writer for The Atlantic and the author of Weird: The Power of Being an Outsider in an Insider World. She has written for The New York Times, the Los Angeles Times, and other publications

The ways that statisticians and governments measure the economy were developed in the 1940s, when the urgent economic problems were entirely different from those of today. Diane Coyle argues that the framework underpinning today’s economic statistics is so outdated that it functions as a distorting lens, or even a set of blinkers. When policymakers rely on such an antiquated conceptual tool, how can they measure, understand, and respond with any precision to what is happening in today’s digital economy? Coyle argues that to understand the current economy, we need different data collected in a different framework of categories and definitions, and she offers some suggestions about what this would entail. Diane Coyle is a Professor of Public Policy at the University of Cambridge and author of The Soulful Science: What Economists Really Do and Why it Matters and GDP: A Brief but Affectionate History. Her new book is The Measure of Progress: Counting What Really Matters. Read Diane Coyle’s new article for Skepti

David Zweig’s new book An Abundance of Caution (MIT Press) is an account of the decision-making process behind the extended closures of public schools during the pandemic. In fascinating and meticulously reported detail, Zweig shows how some of the most trusted members of society—from Pulitzer Prize-winning journalists to eminent health officials—repeatedly made fundamental errors in their assessment and presentation of evidence. By fall 2020, many students in Europe were already back in classrooms—and so were their peers in private schools in America and in public schools across mostly “red” states and districts. Yet millions of other children across the U.S. remained under extended school closures. Whatever inequities that existed among American children before the pandemic, the selective school closures exacerbated them, disproportionately affecting the underprivileged. Deep mental, physical, and academic harms—among them, depression, anxiety, abuse, obesity, plummeting test scores, and rising drop-out rat

It’s tempting to see ourselves as damaged or powerless—defined by past traumas, overwhelming emotions, and daily struggles. But is that really the most helpful way to understand ourselves? Does seeing ourselves as victims lead to growth? Psychologist and author Scott Barry Kaufman joins us to examine how popular narratives around sensitivity, self-esteem, and emotional regulation may be holding us back. He unpacks the psychological costs of coddling (vs. empowerment), the rise of risk aversion, and how modern parenting, education, and therapy shape our sense of self. With insight, empathy, and humor, Kaufman offers a timely look at what it really takes to build resilience, choose meaning over comfort, and unlock the full potential of the human spirit. Scott Barry Kaufman is a cognitive psychologist who is among the top 1% most cited scientists in the world for his groundbreaking research on intelligence, creativity, and human potential. He is the host of The Psychology Podcast, which has received more than 30

Why do ordinary people carry out extraordinary harm when simply told to do so? From the Holocaust to the genocides in Rwanda, Bosnia, and Cambodia, history shows how obedience to authority can lead to unimaginable acts. But what’s happening in the brain when we follow orders—even ones that conflict with our morals? In this episode, we speak with neuroscientist Emilie Caspar, whose groundbreaking research explores how authority influences cognition and behavior. Drawing from real-life accounts of genocide perpetrators and cutting-edge neuroscience, Caspar reveals how obedience can short-circuit independent decision-making—often without us realizing it. Emilie Caspar is a professor at Ghent University, Belgium, where she leads the Moral and Social Brain Lab. She specializes in social neuroscience. Her main research areas focus on obedience and how restricting one’s autonomy and choice options impacts the brain. Her new book is Just Following Orders: Atrocities and the Brain Science of Obedience.