Land productivity limiting human population | Cosmology & Astronomy | Khan Academy

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Thinking about how we get Calories from the land limits human population densities. Created by Sal Khan.

Watch the next lesson: https://www.khanacademy.org/science/cosmology-and-astronomy/life-earth-universe/humanity-on-earth-tutorial/v/energy-inputs-for-tilling-a-hectare-of-land?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy

Missed the previous lesson? https://www.khanacademy.org/science/cosmology-and-astronomy/life-earth-universe/humanity-on-earth-tutorial/v/thomas-malthus-and-population-growth?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy

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