Australian Popular Science, May 31, 2017: To be sure, “any significant dietary shifts from animal to high-protein plant based foods will obviously take a considerable amount of time, likely on the scale of years to a few decades,” said William Ripple, a coauthor of the study and distinguished professor of ecology at Oregon State University. “We used the year 2020 for purely demonstrative purposes, and because there are published greenhouse gas emission targets for that year.” Check out the Human Carnivory Project page!