[XorNot]

Most countries on Earth have declining birth rates, many first world countries have negative population growth.

Overpopulation isn't a thing.

[gefriertrockner]

Overpopulation is a thing in parts of South Asia and Africa. Climate change can affect the agricultural output in many countries and thus the land will support less people. The population growth is still very relevant in most of the affected countries. So overpopulation will definitely be a thing, unless there are real technological breakthroughs.

[nemomarx]

no break throughs needed - provide birth control and education in those regions and the rate will slow