Population |
Number of people in the world. |
Per-capita Consumption |
Average annual resources consumed by each person in the world. |
Total Consumption |
Consumption of everyone in the world (also: R). 1 Earth = resources renewably produced per year. |
Capacity |
Total resources consumed and available for consumption (including what is produced). |
GWP |
Gross World Product (economic activity) |
Emissions |
Global greenhouse gas emissions emitted, in carbon dioxide equivalent mass. Cum = cumulative amount over time. |
Life Expectancy |
Life expectancy at birth. |
Phase |
Category of behavior dependent on ratio of needs to habitat. |
Needs |
Minimum resources per year consumed to sustain population (1/person). Remainder of consumption is waste. |
Max Needs |
Needs of a maximum population that can exist with the current amount of habitat (see below). |
Habitat |
Total resources not consumed = Capacity - Total Consumption. Also: "remaining habitat." |
Population Efficiency |
Measure of population's exponential distribution as a function of phase. |
Population Error |
Fraction of habitat not accounted for with distribution of population as a function of phase. |
Cum R Change |
Emissions-equivalent resources withdrawn from atmosphere. |
Cap Change |
Change in capacity due to causes other than human activity.. |
Cum Population |
Sum of people as a function of phase. |
Happiness |
Life satisfaction (maximum = 1). |
Child/Adult |
Average children per adult in a group. |
Age |
Median age of people in a group. |
Cum Consumption |
Sum of consumption as a function of phase. |
Cum Capacity |
Sum of capacity as a function of phase. |
GWP/p |
Gross World Product per person. |
Wealth/p |
Wealth per person. |
Cum Wealth |
Sum of wealth as a function of phase. |
Extinction Year |
Projected year that population equals zero. |
Temp Anomaly |
Difference between global average temperature and the global average temperature in 1805. |
Hab Density |
People per unit of estimated habitat area. |