Humanity on earth (K-A)

• Understanding calendar notation (K-A)
• Correction calendar notation (K-A)
• Development of agriculture and writing (K-A)
• Firestick farming in early Australia (K-A)
• Collective learning (K-A)
• Thomas Malthus and population growth (K-A)
• Agriculture and human population (K-A)
• Energy inputs for tilling a hectare of land (K-A)
• Random predictions for 2060 (K-A)