population and considerable food security may call for policies that boost fertility, immigration, and worker participation …"For much of its history, human population growth increased at a glacial pace. The demographic rate only soared about … 200 years ago, climaxing in the period 1950-2000. In that 50-year span, the population grew more than it had in the …

" -- Historical change, economic behavior, and demographics -- The demographic portrait -- Generation X and the effects of population …