I guess we could start by no longer exporting food, medicines, and technology to nations that can’t make their own. That should reduce the population by a couple billion in a generation. When these poor nations go to war, let them annihilate one another.
Meanwhile the First World nations (by the end of the generation, known as the Only Nations) could build plenty of nuclear power plants.
There. Global warming fixed in one generation. If its that big of a deal, then let’s use Darwinism (a popular theory among the Progressives, right??) to ensure that the strong survive.
Actually it’s pretty well documented that lowering the standard of living in the third world would increase population rather than decreasing it.