Out-of-wedlock births in the Nordic countries, 1700s to now https://t.co/slwTAuDQ5N
Out-of-wedlock births in the Nordic countries, 1700s to now https://t.co/slwTAuDQ5N
- Declining birth rates
- Inversion of population pyramid
- E.g., Japan
ELON MUSK: "Birthrate might be the biggest threat to the future of human civilization“
When the birth rate is below replacement, the country tilts toward having more older people than younger ones.
Jean M. Twenge • Generations
infertility is linked to an increased risk of certain diseases and earlier death in both men and women, while leading to a decrease in the number of children born over time.
Shanna H. Swan • Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race
25 percent of northwestern European women remained unmarried. The Church provided a respectable alternative institutional mechanism to evade marriage: women could enter the convent. By contrast, in most societies close to 100 percent of females married, and usually at young ages. In traditional China, for example, only 1–2 percent of women remained
... See moreJoseph Henrich • The WEIRDest People in the World: How the West Became Psychologically Peculiar and Particularly Prosperous
the rate of adverse reproductive changes in males is increasing by about 1 percent per year.