Randomness plays an important role in the evolution of life (as my evil twin will tell you). But random doesn't mean arbitrary. Biological organisms are physical objects, after all, and subject to the same laws of physics as non-biological matter is. Those laws place constraints on how organisms can fulfill their basic functions of metabolism, reproduction, motility, and so on. Easy to say, but how can we turn this into quantitative understanding of actual organisms? Today I talk with physical biologist Chris Kempes about how physics can help us understand the size of organisms, their metabolisms, and features of major transitions in evolution.Support Mindscape on Patreon.Blog post with transcript: https://www.preposterousuniverse.com/podcast/2025/01/20/302-chris-kempes-on-the-biophysics-of-evolution/Chris Kempes received his Ph.D. in physical biology from the Massachusetts Institute of Technology. He is currently Professor and a member of the Science Steering Committee at the Santa Fe Institute. His research involves the origin of life and the constraints placed by physics on biological function and evolution.Web siteSanta Fe Institute web pageGoogle Scholar publicationsOrigins of Life online courseSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

In this engaging discussion, Tina Eliassi-Rad, a leading computer scientist and expert on AI and networks, explores how big data shapes our lives and ethical choices. She addresses the challenges of developing accurate AI models, urging a critical approach beyond mere benchmarks. The conversation highlights the biases within AI systems and the consequences for human interaction. Eliassi-Rad also emphasizes the need for educational reform in the age of AI, advocating for skills that promote trust and critical thinking to navigate our increasingly algorithm-driven world.

In a reflective solo discussion, the host tackles the intriguing nature of time. They explore the tension between its fundamental and emergent properties, offering insights from quantum mechanics. Philosophical implications are woven into the scientific discourse, challenging the conventional views on determinism and free will. The conversation delves into eternalism versus presentism, bringing in Einstein's theories to accentuate the complexity of time. This thoughtful examination urges a rethinking of time's true essence in our understanding of the universe.

Reflecting on the year's journey, intriguing insights about scientific publishing emerge, showcasing unexpected collaborations and complex theoretical ideas. The conversation dives into the tantalizing concepts of time travel, general relativity, and the pursuit of self-improvement through language learning. Dark energy and cosmic acceleration take center stage, revealing the evolution of thought in these areas. Finally, the podcast explores the link between entropy and the universe's evolution, intertwining quantum mysteries with the broader scientific narrative.

Michael Wong, a planetary scientist and astrobiologist, dives into the origins of life and the complexity of biological systems. He discusses the debates between metabolism-first and RNA-first theories, shedding light on how interdisciplinary approaches can enrich our understanding. Wong explores universal principles that govern life's complexity and discusses the roles of functions in both living and non-living systems. He also examines the emergence of functional information and its implications for understanding evolution beyond traditional frameworks.

Join neuroscientist Jeff Lichtman, a leading figure in brain mapping from Harvard, as he reveals the wonders of the human brain's wiring. Discover the remarkable Brainbow technique that illuminates neuron connections. Lichtman discusses the challenges of mapping the human connectome and how it compares to simpler organisms. He touches on the self-organizing nature of neural networks and the ethical considerations of brain research. Dive into his insights on consciousness and the potential for neuroscience breakthroughs in understanding human behavior.

In a lively AMA format, listeners explore the rapidly shifting landscape of information during the 2024 elections. Topics include innovative ideas for improving democracy and accountability in legislation. Marvel at the complexities of black holes, event horizons, and the nuances of dark energy in space-time dynamics. The host shares personal anecdotes about finding style and comfort in public speaking, tying scientific discourse to everyday life. This conversation weaves together thought-provoking reflections on truth, ethics, and the pursuit of knowledge.

Emily Wilson, a Professor of Classical Studies at the University of Pennsylvania, is celebrated for her translations of Homer’s epics. In this conversation, she explores the complexities and nuances of translating The Iliad and The Odyssey. Topics include the evolution of these tales from oral to written form, the impact of translation on identity, and the emotional depth achieved through storytelling. Wilson also discusses the significance of the divine in human experience within the texts, and the artistic challenges translators face in capturing their essence.

Brandon Ogbunu, an Assistant Professor at Yale University specializing in Ecology and Evolutionary Biology, dives into the complexities of evolutionary fitness. He discusses fitness landscapes and how they help us understand adaptation in changing environments. The conversation highlights the role of mathematical tools in evolution, the unpredictability of gene mutations, and the impact of modern technologies like CRISPR. Ogbunu also connects evolutionary insights to medical challenges, particularly in understanding drug resistance, showcasing the need for a multidisciplinary approach.

Delve into the fascinating world of emergence, where complex systems arise from simple interactions. Discover how understanding higher-level properties helps us make sense of reality, even without a complete view of the microscopic. Explore the political implications of emergence and consciousness while pondering everyday phenomena like crumpled paper to highlight unpredictability. Learn about the distinctions between strong and weak emergence and their relevance across science, philosophy, and human behavior, all presented with engaging examples and thoughtful insights.