FUND links scenarios and simple models of population, technology, economics, emissions, atmospheric chemistry, climate, sea level, and impacts. Together, these elements describe not-implausible futures. The model runs in time-steps of one year from 1950 to 2200, and distinguishes nine major world regions.
FUND further includes the option to reduce emissions of industrial carbon dioxide.
Reductions can be set by the user, or calculated so as to meet certain criteria set by the user. The model, however, always reflects its developer's world views. It is therefore regularly contrary to the rhetoric of politicians, and occasionally politically incorrect. It is the developer's firm belief that researchers should be locked away in an ivory tower. Models are often quite useless in unexperienced hands, and sometimes misleading.