The Michael Shermer Show

The Zodiac Killer has been treated for decades as America's ultimate unsolved true crime mystery: one mysterious killer, taunting letters, cryptic ciphers, a strange costume, and a trail of victims across Northern California.

Eddie McNamara thinks that story is wrong.

The victims were real, the crimes were real, but the single mastermind may have been a media-made myth.

Eddie McNamara is the author of Zodiactually: The Real Story o...

Michael Shermer speaks with Oxford philosopher Carissa Véliz about the long human desire to know the future—from ancient oracles and astrology to AI, surveillance capitalism, predictive policing, and "data-driven" decision-making. Véliz argues that prediction is rarely neutral: the same machinery that collects personal data also tries to forecast behavior, and once institutions start treating predictions as facts, forecasts c...

Batya Ungar-Sargon joins Michael Shermer for a wide-ranging conversation about the historical relationship between Jews and the American left, and why that relationship has become increasingly strained in recent years.

The discussion begins with the reaction to October 7 and the political language that quickly emerged around Israel, Palestine, power, oppression, and resistance. From there, Ungar-Sargon traces a longer history: Jewi...

Jon Mills, a philosopher, psychoanalyst, and clinical psychologist, joins Michael Shermer to discuss how social justice ideology has moved from a concern with fairness and equal treatment into a rigid moral framework built around oppressors and victims, privilege and disadvantage, good and evil.

Their conversation focuses on the tension between compassion and truth: how to take injustice seriously without reducing people to identit...

America's criminal justice debate usually gets reduced to two options: abolish the system or lock everyone up forever. Economist Jennifer Doleac thinks the data point somewhere else entirely.

In this episode, Michael Shermer speaks with Doleac about what rigorous research can tell us about crime, punishment, deterrence, prison reform, and public safety.

Doleac argues that America has built much of its criminal justice system backwa...

Gad Saad returns to discuss his new book Suicidal Empathy: Dying to Be Kind, a provocative argument that empathy is not a moral trump card. Empathy can illuminate suffering, but it can also distort judgment when it is treated as an unquestionable virtue, applied selectively, or insulated from consequences.

Saad's central claim is that many Western institutions have learned to treat compassion as a substitute for judgment. In practi...

We like to think the future can be figured out if we just gather enough information. Pick the right expert, read the right forecast, find the right framework, and the fog will lift.

Simone Stolzoff argues that this impulse often works against us. In his new book How to Not Know, he makes the case for getting better at uncertainty—not as a slogan, and not as an excuse to believe nothing, but as a practical skill: knowing when ...

Neil deGrasse Tyson returns to The Michael Shermer Show to talk UFOs, aliens, government files, eyewitness testimony, and his new book Take Me to Your Leader: Perspectives on Your First Alien Encounter.

The conversation moves from the limits of eyewitness testimony to why secret military files are not evidence of hidden alien bodies, why high-G turns would turn biological pilots into "a pile of goo," why the universe almost certain...

Journalist and author Ashley Rindsberg returns to The Michael Shermer Show for a wide-ranging conversation about the new media world: influencers with audiences larger than cable networks, conspiracy theories built for engagement, and the collapse of trust that followed COVID, censorship, and years of institutional overreach.

Ashley Rindsberg is an investigative journalist and author focused on digital information platforms. He is ...

Free speech was supposed to be the great settled achievement of liberal democracy. Then came social media, cancel culture, campus speech battles, hate-speech laws, authoritarian tech control, and a new era of governments pressuring platforms from every direction.

Michael Shermer speaks with free speech scholar Jacob Mchangama about why speech protections are weakening around the world—not only in dictatorships, but inside dem...

Stewart Brand has spent a lifetime thinking about tools, systems, civilization, and the long future. Best known as the creator of the Whole Earth Catalog and co-founder of the Long Now Foundation, Brand joins Michael Shermer to discuss his new book, Maintenance of Everything, a sweeping look at what it takes to keep bodies, machines, buildings, institutions, planets, and civilizations from falling apart.

The conversation ranges fro...

Can memories survive death? It sounds like the kind of question skeptics usually dismiss before the conversation even starts. But Ian Stevenson was not a carnival psychic or a late-night ghost hunter. He was a respected psychiatrist at the University of Virginia who spent decades investigating children who claimed to remember previous lives, along with cases involving birthmarks, apparitions, telepathy, and other alleged evidence f...

Astrophysicist Hakeem Oluseyi has lived a life that sounds almost impossible: a childhood marked by poverty, violence, and constant upheaval; a teenage obsession with Einstein; a stint in the Navy; addiction and recovery; work as a janitor; and eventually a PhD in physics from Stanford.

In this conversation, Michael Shermer and Oluseyi talk about his new book, Why Do We Exist?, and the biggest questions science can ask: what came b...

What kind of person helps build a regime like the Third Reich? A monster? A madman? Or something far more unsettling?

Michael Shermer sits down with author Jack El-Hai to talk about the true story behind Nuremberg. At the center is Dr. Douglas Kelley, the American psychiatrist assigned to evaluate the top Nazi defendants after World War II, including Hermann Göring. What he found was not comforting: many of these men were intellige...

What actually makes a life feel meaningful? In this conversation, Daniel Coyle joins Michael Shermer to talk about why fulfillment rarely comes from optimization, status, or trying to "win" at everything. Instead, it grows out of connection, shared effort, curiosity, and the kinds of projects that pull people out of themselves and into real community.

Coyle makes the case that flourishing is not a mood and not a hack. It's a proces...

What actually causes cognitive decline, and how much of it can we do something about?

In this episode, Michael talks with neurologist and neuroscientist Dr. Majid Fotuhi about dementia, Alzheimer's, memory loss, and the everyday habits that shape brain health over time. They discuss why Alzheimer's is only part of the story, why some people remain mentally sharp into old age, and what the evidence says about exercise, sleep, diet, ...

Why does religion still dominate American politics when so many other wealthy democracies secularized long ago?

In this episode, Michael Shermer talks with historian Matthew Avery Sutton about the long relationship between Christianity and American power. From the Puritans to Lincoln, from the Scopes trial to the Religious Right, from slavery to same-sex marriage, this conversation tracks how religious belief has shaped the country...