That's one in the podcast. Some African countries do the full demographic transition within a decade (!). That means bringing girls from the home to school, increasing their wealth creating capacity and hence less and later children. That's very hopeful. Let's say that with all the (religion based) wars for parts of Africa and Asia things are looking less hopeful. You can only include females in human capital when there is relative peace. I think their focus and girl development for the ultimate goal of less CO2 ppm was the first time I grokked some of the more modern gender discussion which I usually cannot relate to (mostly because of terminology and fervour, not for a lack of basic instinct of trying).