New research published in Science (Poore & Nemecek, 2018) analyzes land use in food supply chains. An astounding 3.1 billion ha reduction in land use could be possible by excluding animal products from current diets. That is an area equivalent to Australia + China + European Union + United States. The author also shows that animal products use about 83% of the world’s farmland and contribute about 57% of food’s different emissions, despite providing only 18% of our calories. These findings demonstrate that we need to shift from “company thinking” to “supply chain thinking” if we want to see the full picture.
Poore, J. & Nemecek, T. (2018). Reducing Food’s Environmental Impacts through Producers and Consumers. Science, 360 (6392), 987–992. https://doi.org/10.1126/science.aaq0216 (free download)