"It took 200,000 years for the human population to reach 1 Billion. Then it only took 200 years for it to reach 7 billion." https://t.co/CAVB1D84HO https://video.twimg.com/ext_tw_video/1776539544550096896/pu/vid/avc1/906x720/rge5GdGpjKP1_cpA.mp4?tag=12