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 process. It happens in groups, in relationships, and in the messy work of building something with other people.

Daniel Coyle is the New York Times bestselling author of The Culture Code, which was named Best Business Book of the Year by Bloomberg, BookPal, and Business Insider. Coyle has served as an advisor to many high-performing organizations, including the Navy SEALs, Microsoft, Google, and the Cleveland Guardians. His other books include The Talent Code, The Secret Race, The Little Book of Talent, and Hardball: A Season in the Projects, which was made into a movie starring Keanu Reeves. His new book is Flourish: The Art of Building Meaning, Joy, and Fulfillment.

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, stress, and cognitive activity.

They also cover ADHD, attention, brain training, and the difference between ordinary forgetfulness and something more serious.

At the center of it all is a simple but important idea: many people think cognitive decline is just an unavoidable part of aging, when in fact there is often more room to protect brain function than most of us realize.

Majid Fotuhi, MD, PhD, is an adjunct professor of Neuroscience at Johns Hopkins’s Mind/Brain Institute, an adjunct professor of Psychological and Brain Sciences at George Washington University, and is the medical director of NeuroGrow Brain Fitness Center. His groundbreaking, proprietary research has been published in The Lancet, Nature, Neurology, Neuron, Proceedings of National Academy of Science, the Journal of Prevention of Alzheimer’s Disease, Journal of Rehabilitation, and Journal of Alzheimer’s Disease Reports, among others. His new book is The Invincible Brain: The Clinically Proven Plan to Age-Proof Your Brain and Stay Sharp for Life.

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, and how politics keeps reshaping religion in return.

Matthew Avery Sutton is the Claudius O. and Mary Johnson Distinguished Professor and chair of the Department of History at Washington State University. His new book is Chosen Land: How Christianity Made America and Americans Remade Christianity.