Sublime

The physicist Geoffrey West of the Santa Fe Institute made a remarkable discovery about cities.

MyGoPen

“toy” models of economies—simple models that are so abstract they bear little resemblance to reality.

the U.S.

Kremer illustrates this by showing that as the population of the earth has increased, the rate of population growth has increased rather than declined. Had humans been a burden consuming resources, then the larger the population, the lower the quantity of resources available to each individual and the lower the rate of economic growth and thus popu