Total number of nuclear warheads [in thousands]
Global mean temperature [Celsius]
World population [in billions]
Global energy consumption [exajoules]
Global number of deaths due to AIDS [in millions]
Global average life expectancy [years]
Number of work hours per week in the USA
Number of famine victims [in millions]
Number of world citizens living under democracy [in billions]
Share of people in the world living in poverty [%]
Global inequality between world citizens measured by mean logarithmic deviation [MLD]
Rate of deaths in genocides measured in deaths per 100,000 people per year
Frequency with which the phrase 'Women's rights' is used in English-language books [%]
Share of population aged 15 and over that attended formal education [%]
U.S. Defense spending [billions of U.S. dollars]
Global atmospheric CO2 concentrations in parts per million [ppm]