How a Mass Extinction Changed Our Brains

The video explores the evolution of mammalian intelligence, focusing on brain size and encephalization. It discusses how mammals, despite having large brains, did not follow a straightforward evolutionary path towards intelligence. The KPG extinction event and subsequent ecological changes influenced brain and body size evolution. The video highlights the trade-offs in evolution, showing that larger brains were not always advantageous. It concludes that evolution is non-linear, driven by ecological contexts and trade-offs.

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