Normally I would post this under environmental but our old friend (not), ‘religion has entered the discussion. ”Sub-Saharan Africa (SSA) is the only world region projected to continue population growth in the second half of this century, and even beyond 2100. In SSA, religion and religiosity are major factors contributing to the persistent high birth rates. A new publication by TOP co-workers is reviewing the relationship between human fertility and religions in Sub-Saharan Africa.” [overpopulation-project.com]religiosity-pose-challenges-for-fertility-decline-in-sub-saharan-africa/