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 par…

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 …

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 h…

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 Diane Coyle argues that the framework underpinning today’s economic statistics is so outdated that it functions as a distorting lens, or even a set of blinkers.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…

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—r…

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-…

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 ne…

Amanda Knox spent nearly four years in prison and eight years on trial for a murder she didn’t commit—and became a notorious tabloid story in the process. Though she was exonerated, it’s taken more than a decade for her to reclaim her identity and truly feel free. Amanda’s new book, Free recounts how she survived prison, the mistakes she made and m…

Albert Einstein remains renowned around the world for revolutionizing our understanding of the cosmos, but very few realize that the celebrated scientist had a deep spiritual side. Einstein believed that one wondrous force was woven through all things everywhere—and this sense of the pervasive sacred influenced every aspect of his existence, from h…

Outside of the academics and activists whose ideology came to dominate the West in the second decade of the twenty-first century, arguably no group influenced public discourse as much as the Intellectual Dark Web. Challenging the intellectual and cultural orthodoxies that engulfed universities, the media, and big tech, this group—a loose collective…

In all animals, mating is a deal. But few creatures behave as if sex is a simple, even mutually beneficial, transaction. Many more treat it with reverence, suspicion, angst, and violence. Matt Ridley revisits Darwin’s revelatory theory of mate choice through the close study of the peculiar rituals of birds, and considers how this mating process com…

Phil Tinline, author of the new book Ghosts of Iron Mountain, explores the origins of the infamous Report from Iron Mountain, its role in conspiracy culture, and its lasting influence on perceptions of the military-industrial complex. The conversation also examines Holocaust denial, nativism, and the evolution of deep state conspiracies, highlighti…

A few reflections on religion following The Free Press debate in Austin, TX on February 27, 2025. Michael Shermer and Adam Carolla (atheists) faced off against Ayaan Hirsi Ali and Ross Douthat (Christians). You can watch the debate here: https://www.thefp.com/p/watch-does-the-west-need-a-religiousBy Michael Shermer

Michael and Katherine Stewart discuss the rise of religious nationalism in America, its impact on public education, and the broader implications for democracy. They explore the strategies employed by religious groups to infiltrate public schools, the culture wars surrounding education, and the divisive nature of the New Right. Katherine Stewart is …

Michael Shermer and Jeff Sebo explore moral philosophy, focusing on animal rights, sentience, and consciousness. They discuss the definitions of morality, ethical pluralism, and the divide between consequentialism and deontology. The conversation examines who belongs in our moral circle, the ethics of insect farming, the future of animal agricultur…

The guests today are co-authors of a new paper in Science Advances titled: “A reassessment of the ‘hard-steps’ model for the evolution of intelligent life.” Jennifer Macalady is a Professor of Geosciences at the Pennsylvania State University. Her research is focused on microbial ecology and evolution, and interactions between microorganisms and Ear…

What is a sugar daddy, really? The answer might disturb you. Brook Urick takes us into the shadowy world of sugar dating, where young women are lured into dangerous situations under the guise of financial security. From being a would-be sugar baby to becoming the public face of SeekingArrangement, Urick unveils the unsettling truth about these plat…

In our 501st episode, Michael Shermer takes a moment to reflect on his long journey with skepticism and what he learned recording half a thousand episodes of this podcast. He shares his thoughts on what it means for something to be truly “real” by comparing our personal experiences with evidence-backed facts, tackles the challenge of controversial …

What happens to American democracy if Christianity is no longer able, or no longer willing, to perform the functions on which our constitutional order depends? Jonathan Rauch—a lifelong atheist—reckons candidly with both the shortcomings of secularism and the corrosion of Christianity. Thin Christianity, as Rauch calls the mainline church, has been…

Dr. Rachel Toles, a licensed forensic psychologist, delves into the psychology of criminals, addressing the motivations behind some of the world’s most notorious killers. Her expertise spans trauma, addiction, and impulse control, culminating in her upcoming U.S. theater tour, The Psychology of a Murderer. Through captivating case studies, Toles sh…

Just as surgeons once believed pain was good for their patients, some argue today that death brings meaning to life. But given humans rarely live beyond a century (while certain whales can thrive for over two hundred years) it’s hard not to see our biological limits as profoundly unfair. No wonder then that most people nearing death wish they still…

In this episode, Kurt Gray offers a groundbreaking perspective on the moral mind, challenging the assumption that liberals and conservatives have radically different moral foundations. Drawing on the latest science, he reveals that everyone’s moral judgments stem from feelings of vulnerability to harm. We all care about protecting ourselves and oth…

It’s clear states, borders, and countries constantly evolve. But how do countries form? And what does it take to start a new one? In this episode, Michael interviews Erick Brimen, founder of Prospera, a project dedicated to creating Special Economic Zones that foster economic growth through free-market governance. Brimen shares insights into the ch…

William Green delves into the lives of iconic investors like Buffett, Munger, and Templeton, unraveling how their approaches extend beyond financial success. These super-investors possess unique skills such as rigorous thinking, resilience, and intuition. Through years of interviews, Green reveals how their principles can improve decision-making, m…

In the U.S. alone, more than $400 billion are donated to charity each year—equivalent to two percent of American GDP. This generosity is wonderful, but these gifts don’t do nearly as much good as they could. In recent years, researchers have started studying the effectiveness of different charities, just as investors study the effectiveness of diff…