Radiolab Radiolab

Grass Apes

Sep 25, 2026 · 22m

Summary

Host Molly Webster explores the overlooked importance of grass, featuring biologist David George Haskell. They discuss how grasslands shaped human evolution, leading to bipedalism and the development of our primary food sources like wheat, rice, and corn. The episode also highlights how grass dampens sound and releases calming aromas, connecting us to our ancestral habitats.

Topics discussed

AT&T iPhone 18 Pro Sponsorship Introducing the Radiolab Fanny Pack The Lab Membership and Listener Support Episode Intro: The Grassland Story Public Perceptions of Grass David George Haskell: Grass as Co-Creator Evolution of Grasslands 30 Million Years Ago Grass Adaptations: CO2 and Fire Resistance Silicate in Grass and Animal Digestion Mammal Evolution and Grass Seeds Ancestral Diet: Eating Grass Seeds Grasses as the Foundation of Human Food Sponsor Breaks: Capital One, BetterHelp, Smalls, WISE Bipedalism and the 'Grass Ape' Hypothesis Sensory Connection: Sound and Scent of Grass Credits and Closing Remarks
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