The world is doomed, many people argue, citing poverty, dwindling natural resources, and an allegedly unsustainable rate of population growth. They say there are just too many problems to overcome. But is that really the case? In his book Fewer, Richer, Greener: Prospects for Humanity in an Age of Abundance, Laurence Siegel shows that the world has improved―and will likely continue to improve―in almost every dimension imaginable. That includes access to more food, better health, greater longevity, and higher levels of education. He argues that we live in the safest and most prosperous time in all of human history. Siegel makes a convincing case for showing gratitude for today’s world and optimism about the bountiful world of tomorrow. During this forum, Bryan Caplan will provide constructive and critical comments.