109. Neil Shubin — Some Assembly Required: Decoding Four Billion Years of Life, from Ancient Fossils to DNA

109. Neil Shubin — Some Assembly Required: Decoding Four Billion Years of Life, from Ancient Fossils to DNA

The author of the best-selling Your Inner Fish gives us a lively and accessible account of the great transformations in the history of life on Earth — a new view of the evolution of human and animal life that explains how the incredible diversity of life on our planet came to be. Over billions of years, ancient fish evolved to walk on land, reptiles transformed into birds that fly, and apelike primates evolved into humans that walk on two legs, talk, and write. For more than a century, paleontologists have traveled the globe to find fossils that show how such changes have happened. We have now arrived at a remarkable moment — prehistoric fossils coupled with new DNA technology have given us the tools to answer some of the basic questions of our existence: How do big changes in evolution happen? Is our presence on Earth the product of mere chance? This new science reveals a multibillion-year evolutionary history filled with twists and turns, trial and error, accident and invention. In Some Assembly Required, Neil Shubin takes readers on a journey of discovery spanning centuries, as explorers and scientists seek to understand the origins of life’s immense diversity. Shermer and Shubin also discuss:

  • Darwin’s consilience of inductions (convergence of evidence) from multiple lines of inquiry
  • how a scientific theory can gain acceptance without an underlying causal mechanism (evolutionary theory before DNA)
  • what scientists should do with anomalies unexplained by the prevailing theory
  • Does ontogeny recapitulate phylogeny? (What can we learn about evolution from embryology?)
  • What is epigenetics, anyway?
  • the best explanation for the origins of life
  • how information can increase in a genome
  • from microevolution to macroevolution: why creationists are wrong
  • Are there hopeful monsters in evolution?
  • Punctuated equilibrium and what it was like to be Steve Gould’s TA
  • women in science, then and now
  • What it’s like to do a paleontological dig north of the arctic circle? and
  • Martian paleontology.

Neil Shubin is the author of Some Assembly Required, Your Inner Fish, and The Universe Within. He is the Robert R. Bensley Professor of Organismal Biology and Anatomy at the University of Chicago. He was elected to the National Academy of Sciences in 2011. He lives in Chicago.

Listen to Science Salon via Apple Podcasts, Spotify, Google Play Music, Stitcher, iHeartRadio, and TuneIn.

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Is Traditional Religion Doomed?

Is Traditional Religion Doomed?

Traditional religion in the United States has suffered huge losses in recent decades. The number of Americans identifying as “not religious” has increased remarkably. Religious affiliation, service attendance, and belief in God have declined. More and more people claim to be “spiritual but not religious.” Religious organizations have been reeling from revelations of sexual and financial scandals and cover-ups. Public trust in “organized religion” has declined significantly. Crucially, these religious losses are concentrated among younger generations. This means that, barring unlikely religious revivals among youth, the losses will continue and accelerate in time, as less-religious younger Americans replace older more-religious ones and increasingly fewer American children are raised by religious parents. All this is clear. But what is less clear is exactly why this is happening. We know a lot more about the fact that traditional American religion has declined than we do about why this is so. Christian Smith is the William R. Kenan, Jr. Professor of Sociology and Founding Director of the Center for the Study of Religion and Society at the University of Notre Dame. Smith is well known for his research focused on religion, adolescents and emerging adults, and social theory. He has written many books, including Divided by Faith, Soul Searching, and Moral, Believing Animals. His new book is Why Religion Went Obsolete: The Demise of Traditional Faith in America.

5 Aug 1h 21min

Drowning in Decisions: Do We Have Too Many Choices?

Drowning in Decisions: Do We Have Too Many Choices?

In this episode, Michael Shermer speaks with historian Sophia Rosenfeld about how modern notions of personal choice—from Amazon shopping to Tinder swipes—emerged from centuries of cultural, religious, political, and economic transformation. Was there ever a time when choice wasn’t synonymous with freedom? Why were early ideas of “common sense” and “free will” so limited? And what happens when choice itself becomes overwhelming? From Enlightenment ideals to the sexual revolution and the abortion debate, Rosenfeld traces how our expanding range of options—and the meaning we attach to them—has shaped everything from our romantic lives to our political systems. A revealing look at the hidden history of freedom in a world that sometimes offers too much. Sophia Rosenfeld is Professor of History at the University of Pennsylvania. Her new book is The Age of Choice: A History of Freedom in Modern Life.

29 Juli 1h 26min

Are We Alone? Martin Rees on Aliens, The Fermi Paradox & The Fate of Humanity

Are We Alone? Martin Rees on Aliens, The Fermi Paradox & The Fate of Humanity

What can a lifetime of scientific discovery teach us about the universe—and ourselves? In this wide-ranging conversation, Michael Shermer sits down with Lord Martin Rees, renowned cosmologist, astrophysicist, and former Astronomer Royal, to reflect on the forces that shape scientific success, from personal luck to cultural context. Rees shares insights on the mysteries of cosmology, the search for extraterrestrial life, and the paradoxes that still puzzle humanity. Rees also shares intimate reflections on his friend and Cambridge colleague Stephen Hawking, thoughts on Fermi’s Paradox, and why some truths may forever lie beyond human comprehension. The discussion also turns toward urgent global issues: the promise and peril of AI, ethical dilemmas in a rapidly advancing world, and how religion and terrorism could shape our future.

22 Juli 1h 5min

The True Cost of Conviction

The True Cost of Conviction

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 of The Knowledge Illusion (with Phil Fernbach). His new book is The Cost of Conviction: How Our Deepest Values Lead Us Astray.

15 Juli 1h 18min

Debra Soh and Michael Shermer at FreedomFest 2025

Debra Soh and Michael Shermer at FreedomFest 2025

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.

14 Juli 19min

Douglas Murray on Hamas, Iran, and the Collapse of the Two-State Solution

Douglas Murray on Hamas, Iran, and the Collapse of the Two-State Solution

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 On Democracies and Death Cults.

8 Juli 1h 11min

Can Politics and Truth Coexist?

Can Politics and Truth Coexist?

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 Humanities and Board of Trustees Distinguished Professor of Philosophy at the University of Connecticut. Lynch is the author or editor of ten books, including Know-it-All Society, The Internet of Us, Truth as One and Many, and the New York TimesSunday Book Review Editor’s pick, True to Life. He has spoken at TED and SXSW. In 2019 he was awarded The George Orwell Award, which recognizes writers who have made outstanding contributions to the critical analysis of public discourse. His new book is On Truth in Politics: Why Democracy Demands It.

1 Juli 1h 8min

Michael Egnor X Christof Koch X Michael Shermer | A Debate on the Mind, Soul, and the Afterlife

Michael Egnor X Christof Koch X Michael Shermer | A Debate on the Mind, Soul, and the Afterlife

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 California Institute of Technology. Author of four previous titles—The Feeling of Life Itself: Why Consciousness Is Widespread but Can’t Be Computed, Consciousness: Confessions of a Romantic Reductionist, and The Quest for Consciousness: A Neurobiological Approach—Koch writes regularly for a range of media, including Scientific American. His latest book is Then I Am Myself the World.

25 Juni 1h 48min

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