On Humans

Denise Su, a paleoecologist who reconstructs ancient environments, explores where humans evolved. She examines early hominins, foot anatomy and arboreal habits. She explains how isotopes, fauna and soils reveal diets and habitats. She unpacks climate-driven forest loss, the range of savannas, adaptability and the rise of Homo erectus with long-distance walking and thermoregulation.

Richard B. Lee, Canadian anthropologist who spent decades with Kalahari foragers, reflects on the 1966 Man the Hunter symposium. He recounts meeting the Ju/'hoansi, debates around the Original Affluent Society, gendered roles in foraging, shifts from foraging to farming, and how ecology shapes social inequality. Short, thoughtful stories and big-picture reflections throughout.

Manvir Singh, an anthropologist at UC Davis and author of 'Shamanism: The Timeless Religion', dives into the fascinating world of shamanism. He explores how varied practices evolve and intertwine with modern life, breaking down exotic perceptions versus scholarly definitions. Discussions include the transformative power of trances, the cultural markers that define shamans, and the intriguing connections between shamanism and major religions, even pondering if figures like Jesus had shamanic traits. Singh argues for the persistent relevance of shamanic practices in today's spiritual landscape.

Join renowned experts as they unravel the mysteries of human origins. Tim Coulson discusses how the extinction of dinosaurs paved the way for primates. Chris Stringer explains how dietary changes fueled brain growth. Dean Falk reveals how bipedalism influenced the development of music and language. Johannes Krause shares fascinating insights on Denisovans and the coexistence of multiple human species. Dive into the evolution of Homo sapiens and the challenges of agriculture, shaping our journey through time.

Mira Magdalena Sickinger, a poet and humor philosopher from the University of Vienna, explores the intricate role of humor in our lives. She discusses the risky social contracts of joke-telling and how humor reflects shared experiences. Their conversation dives into theories from Freud to Kant, revealing how laughter signals social bonds and coping mechanisms. Mira also delves into the politics of humor, examining its potential to challenge power dynamics and reflect societal truths, highlighting its profound connection to the human condition.

Andrés Moreno-Estrada, a prominent Mexican geneticist and expert in Latin American population genetics, dives into the epic migrations of humans from Africa to the Americas and Polynesia. He discusses the dominant ancestral source of Native Americans and the contrast in indigenous ancestry retention between North and South America. Notably, he shares emerging evidence of genetic links between Polynesia and the Americas and highlights how island genetics amplify ancient admixture signals. The conversation delves into the navigational skills of Polynesians and the fascinating timing of their exploratory voyages.

In this engaging discussion, Diyendo Massilani, a researcher at Yale School of Medicine specializing in ancient DNA and human adaptations, explores the complexities of human evolution and genetic diversity. He reveals counter-intuitive insights about the Out of Africa theory and emphasizes the deep genetic divergences within African populations. Massilani also highlights how superficial traits can mislead us and shares fascinating details on how lighter skin evolved in response to environmental pressures. Mixing and admixture, he argues, are key to understanding human innovation.

In this engaging discussion, David Gokhman, a researcher at the Weizmann Institute of Science, sheds light on the fascinating world of ancient DNA and its revelations about Neanderthals. He explores the remarkable differences in brain structure and function between archaic humans and modern ones, particularly highlighting unexpected roles of the cerebellum. Gokhman also discusses the genetic impact of interbreeding, showcasing how these interactions shaped our species and hint at the complexities of language evolution.

Explore the fascinating debates surrounding human origins, where a single accessible story might emerge. Delve into the paradox of why humans exist at all, and the evolution of primates from post-dinosaur mammals. Discover how tree-dwelling shaped prolonged childhoods, and the trade-offs of bipedalism. Hear about the importance of community caregiving and the role of nutrition in brain development. Finally, reflect on the unresolved questions of language origins amidst the story of our evolution from early primates to Homo sapiens.

Tim Coulson, an Oxford biologist and author, dives into the complexities of free will, linking it to the evolution of movement and the origins of behavior. He debates whether the universe is deterministic or random, highlighting quantum mechanics as a potential source of true randomness. Coulson explores intriguing concepts in quantum biology, like its role in photosynthesis and consciousness. He passionately argues how randomness influences our choices, while sharing his humanist outlook, emphasizing the unique privilege of scientific exploration.