

Inner Cosmos with David Eagleman
iHeartPodcasts
Neuroscientist and author David Eagleman discusses how our brain interprets the world and what that means for us. Through storytelling, research, interviews, and experiments, David Eagleman tackles wild questions that illuminate new facets of our lives and our realities.
Episodes
Mentioned books

37 snips
Mar 2, 2026 • 44min
Ep143 "How do things last?" Part 1: neurons to civilizations
Why do some things endure while others vanish? The show explores persistence from neural moments that stitch music and motion to cultural and material longevity. Hear stories about Greek fire, Roman self-healing concrete, sharks and tools that resist change, and why myths and religions outlast facts through redundancy and replication.

43 snips
Feb 23, 2026 • 1h 33min
Ep142 "Do breakthroughs require rule-breakers?" with Eric Weinstein
Eric Weinstein, mathematician and physicist known for bold critiques of scientific institutions, joins to probe why breakthroughs often come from outsiders. He explores cowboy science, how peer review and gatekeeping can stifle innovation, and the uneasy overlap between cutting-edge research and national security. Short, provocative takes on secrecy, scientific credit, and rebuilding systems to protect daring ideas.

33 snips
Feb 16, 2026 • 37min
Ep141 "What do brains and weather systems have in common?" with Nicole Rust
Nicole Rust, neuroscientist and author of Elusive Cures, argues for reframing the brain as a complex, feedback-driven system. She compares brains to weather systems and explores why linear, single-target approaches fail for psychiatric and neurodegenerative disorders. They discuss serendipity in drug discovery, landscape models of neural activity, and how large-scale recordings plus AI could reshape neuroscience research.

45 snips
Feb 9, 2026 • 1h 21min
Ep140 "How does your brain decide what’s true?" with Sam Harris
Sam Harris, public intellectual and neuroscientist known for writing on rationality and consciousness, joins to probe why beliefs stick. He discusses belief as brain-driven action, the social roots of truth, why debunking fails, identity’s role in stubbornness, and how science and politics shape disagreement. Short, sharp takes on belief formation and its societal stakes.

88 snips
Feb 2, 2026 • 58min
Ep139 "What does alignment look like in a society of AIs?" with Danielle Perszyk
Danielle Perszyk, a cognitive scientist who leads human-computer interaction at Amazon’s AGI Lab. She explores intelligence as social alignment. They discuss communicative drive, neural synchrony, and how conversation stabilizes shared concepts. She outlines building agents that model minds, coordinate with one another, and support personalized learning while avoiding human flaws.

66 snips
Jan 26, 2026 • 1h 8min
Ep138 "Why do our political brains mistake opinion for truth?" with Kaizen Asiedu
Kaizen Asiedu, a philosopher-turned-political commentator who runs Clear Thinker, discusses why certainty in politics often feels truer than it is. He explores why conspiracies thrive, how social identity and outrage entrench beliefs, and why simple, emotional narratives beat complex truth. Conversation covers teaching clearer reasoning, social media’s amplification, and using AI and debate training to raise the rhetorical bar.

24 snips
Jan 19, 2026 • 47min
Ep137 "Do cures ever create the next crisis?" with Thomas Goetz
In this discussion, Thomas Goetz, a science journalist and author focused on medicine, dives into the complex reality of medications. He explores how modern diseases, like obesity and anxiety, may be products of our environment rather than just individual flaws. With a fascinating look at GLP-1 drugs, Goetz debates the societal implications of dependency on pills versus structural influences on health. He emphasizes the unintended consequences of medications and the evolving relationship between society and pharmaceutical solutions.

33 snips
Jan 12, 2026 • 42min
Ep136 "Why do we care about mattering?" with Rebecca Goldstein
In this engaging discussion, philosopher and author Rebecca Goldstein dives into the concept of 'mattering'—the fundamental human need to feel significant. She explores how mattering underpins happiness, ambition, and even depression, linking unmet desires for significance to broader societal issues like polarization and extremism. Goldstein presents strategies for realizing one's mattering, illustrates with stories like that of Scott Joplin, and offers advice for individuals struggling to find their sense of worth. A thought-provoking conversation on what it truly means to matter!

40 snips
Jan 5, 2026 • 55min
Ep135: What does neuroscience mean by hypnosis? with David Spiegel
David Spiegel, a Stanford psychiatrist and hypnosis expert, dives into the fascinating world of hypnosis, demystifying its clinical applications for pain, anxiety, and habit change. He explains how attention and expectation can reshape our experiences, revealing the brain’s pathways. Hypnosis is contrasted with meditation and flow states, emphasizing its intentionality. Spiegel discusses its proven effectiveness in medical settings, barriers to broader acceptance, and the potential of his Reverie app for accessibility in therapeutic hypnosis.

12 snips
Dec 29, 2025 • 29min
Ep82 Re Broadcast "Why Do Your 30 Trillion Cells Feel Like a Self?" Part 1
Explore the fascinating puzzle of selfhood and continuity in a constantly changing body. The ship of Theseus sparks a debate on identity amidst cellular turnover. Delve into how memories can shift our perception of self, revealing the instability of personal recollections. Consider thought experiments about age in an afterlife and the peculiar End-of-History illusion that leads us to underestimate future changes in beliefs and preferences. Join a journey through the fluid nature of identity and how we navigate our future selves.


