Hans Rosling tackles that question better than anyone in What Stops Population Growth: https://youtu.be/ZnexjTCBksw https://youtu.be/ZnexjTCBksw His first TED

Hans Rosling tackles that question better than anyone in What Stops Population Growth: https://youtu.be/ZnexjTCBksw https://youtu.be/ZnexjTCBksw His first TED talk on the best data you've ever seen is also worth watching. It's an important question, but our understanding of what causes population spikes, and how people respond to improved wealth and health in a country, can make us a little more optimistic.