An eye-opening exploration of humanity's unprecedented path to global depopulation and its significance from economists Dean Spears and Michael Geruso.

The world's population has surged over the past 200 years-not due to increased fertility, but thanks to improvements in survival. Since then, our larger society has thrived like never before: scientific breakthroughs, a global economy, healthier lives, and social progress.

A significant shift is now on the horizon. Humanity is projected to peak at 10 billion, followed by a rapid decline. It would be easy to think that...