In the developed world, highly religious groups are the only groups who have been able to sustain fertility rates above, say, 2.5 children per woman. The ones I

In the developed world, highly religious groups are the only groups who have been able to sustain fertility rates above, say, 2.5 children per woman. The ones I am aware of are the Amish, Haredi Jews, Mennonites, and the Hutterites. All of those are around 6 children per woman. The demographics of these groups have real consequences. The Amish have witnessed a 50-fold increase in population in the last 90 years (from 5,000 to 250,000). Haredi comprised only 5% of the Jewish population in Israel as recently as 1990, but they're now at 10% of the total Jewish population and a whopping 29% of the the Jewish population under 20 years of age. --- I wrote something about this, if you're interested: http://www.thinkfundamental.org/the-people-who-believe-in-evolution-are-losing-at-it/ http://www.thinkfundamental.org/the-people-who-believe-in-ev...