"[The world] population may shrink for multiple reasons, including poor nutrition and epidemics."
A basic understanding of overshoot reveals that our modern industrial — Population decline
"A basic understanding of overshoot reveals that our modern industrial way of life is unsustainable at anything like its current scale and intensity. Whether as a result of pollution or resource depletion, human population and per-capita consumption will peak and start to decline, most likely during the next decade or two. But it gets worse: during our brief binge of industrialism we humans have found strategies (including corporate globalization and the proliferation of credit and debt in a widening variety of forms) to maximize consumption in the short term; when these strategies inevitably falter, the result will likely be an even faster decline in population and consumption than might be expected on the basis of ecological factors alone."

Population decline, also known as depopulation, is a reduction in a human population size. Earth's total human population continues to grow, as it has done throughout history, but projections suggest this long-term trend may be coming to an end. From antiquity until the beginning of the Industrial Revolution in early modern Europe, the global population grew very slowly, at about 0.04% per year. A
Population decline, also known as depopulation, is a reduction in a human population size. Earth's total human population continues to grow, as it has done throughout history, but projections suggest this long-term trend may be coming to an end. From antiquity until the beginning of the Industrial Revolution in early modern Europe, the global population grew very slowly, at about 0.04% per year. A
View all quotes by Population declineMore by Population decline
View all →"Humans, like many mammals, have hormonal and genetic mechanisms that help control procreation. In good times females reach puberty earlier, and their chances of getting pregnant are a bit higher. In bad times puberty is late and fertility decreases."
"The sudden — and surprising — end of the fossil fuel age will stun everyone — and kill billions."
"The ultimate measure of human success is not production but reproduction. Economic productivity and profit are means to reproductive ends, not ends in themselves."
"With populations aging and declining almost everywhere, countries may one day be competing for immigrants."
"A lot of technologies have been utilised in storing food or growing more of it. And we know that increased access to food increases population size. The reverse is also true, of course, so we should expect population to fall as harvests come under stress from the effects of climate change. […] At every possible fork in the path of the future, humans, generally, will always choose the route that gives them more convenience or more comfort. Only when none of the possible routes provide that option will humans start down the contraction and lower energy path."