Elements

Heat

Introduces thermodynamic problems for human habitats, whether to make the Earth's surface uninhabitable, outgoing longwave radiation (OLR), eliminating the greenhouse effect using sequestration, the thermal structure of the human habitat, the Earth population limit of heat, thermodynamic bottlenecks, and the conclusion.

Energy

Discusses energy generation technologies, passive vs active, considers conventional nuclear power, geothermal, terrestrial solar power, space-based solar power (SBSP), the energy required per person, the Earth population limits of geothermal and terrestrial solar, the challenges of a space-based solar power constellation, and SBSP scaling

Elements

Introduces elemental limits, and analyzes Oxygen, Silicon, Calcium, Iron, Aluminum, Nitrogen, Carbon, Chromium, Copper, Potassium and Phosphorus. Addresses waste management and recycling.

Food

Explains indoor agriculture, compares indoor vs outdoor agriculture, and emphasizes the omnivorous diet.

Water

Describes water management, the water required per-person and the Earth population limit of water.