In a simple growth model we explore the current and future growth effects of the regional population structure. Regional GDP growth in 227 regions within six countries in central Europe is explored as how they depend on the young and old dependency ratio. The young dependency ratio (YDR) is...

Sir Francis Bacon explored as a medical question the issue of how human life spans might be returned to the near-thousand years enjoyed by Adam and the Patriarchs. Extended old age seemed feasible: reports told of people living well into their centenary. Meanwhile, New World natives were said to...