I feel that overpopulation is still a major problem worldwide and specifically in the US and leads, as one element, to scarcity of food (in parts of Africa for example), if not now in the US, then certainly in the future. Outdated and simplistic?

Surely we could choose areas of cooperation? Make contraception and abortion of unneeded post- replacement pregnancies available in out of control areas where starvation is already rampant? Too specific and simplistic ? ( How is China coming along with the one child per couple dictum? )
Population control might be simpler than trying to reform corrupt leaders who appear sanguine while watching genocide by starvation and disease happening within their purview.

There are difficulties with maintenance of endangered habitats in areas of human poverty and hunger, as one small example of cooperation problems, if I understand cooperation on an international level.

I need a reading list. I am too out of touch.