Americans having less kids plus an ageing population could be a recipe for disaster that further erodes social stability Americans having less kids plus an ageing population could be a recipe for disaster that further erodes social stability Remember environmentalist Paul Ehrlich’s 1960s-vintage prediction about how overpopulation would deplete the Earth’s resources and condemn millions to starvation? His Malthusian condemnation of humanity’s voracious appetite has kept a grip on the debate