At the turn of the 20th century, millions of Americans, including elite scientists, major newspapers, and cultural icons, were convinced that Mars was home to an advanced civilization.

In this episode, Michael Shermer speaks with award-winning science journalist David Baron about one of the most astonishing episodes in scientific-cultural history. Blurry telescopes, mistranslated words, and persuasive personalities transformed speculation into accepted fact, while more cautious scientists struggled to be heard.

The discussion covers Percival Lowell’s Martian canals, Nikola Tesla’s claim to have detected signals from another planet, and the role of mass media and early science fiction in fueling public belief.

The episode also connects this forgotten moment to present-day debates about UFOs, alien megastructures, and the search for extraterrestrial intelligence, raising broader questions about how scientific ideas spread and why some claims capture the public imagination.

David Baron is an award-winning journalist, broadcaster, and author. A former science correspondent for NPR, he has also written for The New York Times, The Washington Post, The Wall Street Journal, The Los Angeles Times, Scientific American, and other publications. David recently served as the Baruch S. Blumberg NASA/Library of Congress Chair in Astrobiology, Exploration, and Scientific Innovation. His new book is The Martians: The True Story of an Alien Craze that Captured Turn-of-the-Century America.

What if the great discoveries of science came in the “wrong” order? The Laws of Thermodynamics were discovered well after the creation of algebra, classical physics, and chemistry, but are perhaps much more important to our basic understanding of the universe.

Chris Edwards argues that AI will be able to understand science outside of the traditional chronological developments of the sciences, unlocking entirely new potentials and perspectives on the universe. If human scholars are to understand how AI interprets the universe, we will first need to understand the scientific narrative in a “new order.”

Chris Edwards teaches history, English, and mathematics at a public school in the Midwest. He is a frequent contributor to Skeptic magazine and the author of Thought Experiments: History and Applications for Education, Beyond Obsolete: How to Upgrade Classroom Practice and School Structure, Femocracy: How Educators Can Teach Democratic Ideals and Feminism, and most recently of The New Order: How AI Rewrites the Narrative of Science. His background is in world history.

Criminal profiling promises certainty in the face of horror: this is what a killer looks like, this is how they think, this is how we stop them. But what if that promise is mostly an illusion?

In this episode, Michael Shermer is joined by journalist and author Rachel Corbett to dismantle the myths behind criminal profiling, from the FBI’s Behavioral Science Unit to our obsession with serial killers, mindhunters, and “psychological fingerprints.”

Corbett explains why randomness is harder to accept than evil, and how our hunger for neat explanations can actually make us less safe.

Plus, the legacy of MKUltra and Ted Kaczynski, the seductive appeal of true crime, and the uncomfortable truth behind the “Jekyll and Hyde” problem: monsters rarely look like monsters.

Rachel Corbett is a features writer at New York magazine, and her writing has also appeared in The New Yorker, The New York Times, and The Atlantic. She is the author of You Must Change Your Life, which won the Marfield Prize, the National Award for Arts Writing. Her new book is The Monsters We Make: Murder, Obsession, and the Rise of Criminal Profiling.