The 1% can solve this problem they are so concerned about by volunteering to be those "Culled,"and redistributing all their hoarded wealth to the rest of the Earths children.
With each and every one of us creating a food forest with Permaculture, we will need double the population on earth to re-green the deserts.
Population isn't the problem, greed is the cancer.
RE: How Much Human Population Should Be Earth?