Cosmology and astronomy
Life on Earth and in the Universe

Humanity on Earth

  1. Human Evolution Overview
  2. Understanding Calendar Notation
  3. Correction Calendar Notation
  4. Development of Agriculture and Writing
  5. Firestick Farming
  6. Collective Learning
  7. Thomas Malthus and Population Growth
  8. Land Productivity Limiting Human Population
  9. Energy Inputs for Tilling a Hectare of Land
  10. Random Predictions for 2060

Land Productivity Limiting Human Population Thinking about how we get Calories from the land limits human population densities

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Land Productivity Limiting Human Population

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