Pew Research indicates: "By 2055 to 2060, just 9% of all babies will be born to religiously unaffiliated women, while more than seven-in-ten will be born to either Muslims (36%) or Christians (35%)."<ref>[http://www.pewforum.org/2017/04/05/the-changing-global-religious-landscape/ The Changing Global Religious Landscape], Pew Research 2017</ref>
In 2011, [[Eric KaufmanKaufmann]] wrote in his academic paper ''Shall the Religious Inherit the Earth?: Demography and Politics in the Twenty-First Century''
{{Cquote|Today, values play a more important role in fertility behaviour, throwing the contrast between religious pro[[natalism]] and secular low-fertility individualism into relief. Over several generations, this process can lead to significant social and political changes. Early Christianity’s exponential rise during its gestation period from 30 to 300 A.D. has been traced to its superior demography (fertility, mortality and female sex ratio), which maintained a rate of growth similar to contemporary [[Mormonism]]: 40 percent per decade. For Christians, this led to a jump from 40 converts to 6 million inside three centuries. (Stark 1996) Christianity became the religion of an empire and a continent. In the United States, conservative sects increased their share of white [[Protestantism]] from roughly a third to two-thirds during the twentieth century – largely on the back of higher fertility. On the other hand, sects like the Shakers and Cathars, which permitted entry only through conversion, rapidly faded from the scene. Demographic religious revival is a medium and long-term phenomenon, but awareness of shifting population composition can lead to political soul-searching and instability well before the full impact of demographic change takes place. This is clear in ethnically-tense societies like [[Israel]], [[Northern Ireland]], [[Bosnia]], [[Lebanon]], Cote D’Ivoire or Assam.<ref>[http://www.sneps.net/RD/uploads/1-Shall%20the%20Religious%20Inherit%20the%20Earth.pdf ''Shall the Religious Inherit the Earth?: Demography and Politics in the Twenty-First Century''] by [[Eric Kaufmann]], Belfer Center, Harvard University/Birkbeck College, University of London (PDF)</ref>}}