Over the past two million years, humans evolved from an obscure herbivorous species living in the tropical forests of equatorial Africa to become the world’s most populous carnivorous apex predator species. In the 21st century, this fateful change in the human diet from plant to animal sourced foods is the leading cause of chronic degenerative disease, runaway climate change, and mass species extinction. Man Eating Plants: How a Vegan Diet Can Save the World weaves together published works by the world’s leading scientists and historians to narrate how we arrived at these three interrelated crises and how we can save the world by transitioning back to our natural plant-based diet.