There is no evidence that 7.8 billion people globally are overpopulation. No science backs this up. We are not running out of resources to sustain 7.8 billion, 8 billion, 9 billion people or more. We are not causing climate change. Climate change is a natural part of the earth's history. Global CO2 has been many times higher than the 400ppm it is today. Infact CO2 contribution by mankind is less than 5% of all CO2. CO2 is a needed element for life on earth including all trees and vegetation. The earth is greener today that ever measured in human time. There is no scientific maximum we know of to limit how many people can live on Earth. Anyone who claims overpopulation is either a liar or ignorant of known science. Back in the 70's when the global population was about 3.5 billion many of the same liberal leftards including socalled experts claimed overpopulation. Now more than double the 3.5 billion many of the same people claim overpopulation. It's all fearmonging and I say follow the money.