Population control has been happening for decades now. We are rapidly approaching a flat, replacement-level birth rate. Population isn't growing because of bir

Population control has been happening for decades now. We are rapidly approaching a flat, replacement-level birth rate. Population isn't growing because of births. It's growing because of much longer lifespans, that go hand-in-hand with the economic and health care improvements that are raising life expectancy from the 50s to the 70s in most countries. Another generation or two, and that effect disappears into the overall population.