Land productivity limiting human population | Cosmology & Astronomy | Khan Academy
13:41
Energy inputs for tilling a hectare of land | Cosmology & Astronomy | Khan Academy
13:17
Collective learning | Life on earth and in the universe | Cosmology & Astronomy | Khan Academy
13:03
Development of agriculture and writing | Cosmology & Astronomy | Khan Academy
12:04
Precession causing perihelion to happen later | Cosmology & Astronomy | Khan Academy
9:53
Chronometric revolution | Cosmology & Astronomy | Khan Academy
22:59
La paradoja de la cúpula: una laguna en las leyes de Newton
6:19
Human Population Through Time (Updated in 2023) #datavisualization
32:28