"The ultimate measure of human success is not production but reproduction. Economic productivity and profit are means …"

"On a farm, a child is an investment—an extra pair of hands to milk the cow, or shoulders to work the fields. But in a…"

"With populations aging and declining almost everywhere, countries may one day be competing for immigrants."

"Among millennials, especially, the fertility rate is very low. Between 2007 and 2012, the birth rate among Americans …"

"All of this is completely, utterly wrong. The great defining event of the twenty-first century—one of the great defin…"

"There are more forty-year-old women than there are thirty-year-old women, who outnumber twenty-year-old women. That's…"

"The low-fertility trap, once in place, is irreversible."

"[The world] population may shrink for multiple reasons, including poor nutrition and epidemics."

"We cannot know in advance exactly how the economy will [reduce] its energy consumption, besides regionalization and p…"

"The first dramatic effect of food shortage is upon fertility."