Recent estimates for population growth are at odds with one and other. Where the United Nations sees 11 billion people on the planet by 2100, the University of Washington’s Institute for Health Metrics and Evaluation sees growth to 9.7 billion initially and then a decline back to 8.8 billion by the end of the century. Future population sizes underpin future strategies for governments and industries around the world. This article via the World Economic Forum underscores the point. The quick video snippet in the Tweet below is fascinating.