Status Updates From Ecology: A Pocket Guide

using goodreads as a bookmark

humans now alive consume an estimated 40% of the photosynthetic productivity of the whole planet. Doubling the current human population, as some consider likely, might be accomplished by near-universal vegetarianism combined w/ much fairer worldwide distribution fo food. Under any other circumstances, it would require capturing 80% of photosynthetic productivity (...) Our goal should really be in the other direction.