At eight billion people, humanity has reached a major demographic milestone. Yet with a growing population, questions arise over whether nations can keep up. While developed Western countries struggle to take care of aging populations and low birth rates, many developing countries need to find answers to support a booming young population ready to work. 

Jack Goldstone, a political demographer and a professor of public policy at George Mason University, joins the show to talk to Stewart about the world at eight billion, the regional trends in population growth and decline, and how governments around the world can meet the moment to promote human flourishing across the globe.