The Human Flood


floodLecture four of “The Cognitive Revolution” concerns the flood of homo sapiens all over the planet.

While doing this, they drove numerous other species to extinction. In Australia, up to 95% of all large animal species vanished. In America, 84 of 107 large mammal species disappeared. Altogether, about half of the large terrestrial mammals that populated Earth became extinct. How could a few million individuals who possessed no more than Stone Age technology have caused such devastation?

Dr. Yuval Noah Harari looks at theories of what happened to all many of the mammals and of the impact of our species on the planet. These are my notes of his video lectures.

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