The opportunity cost of animal based diets exceeds all food losses
Shepon, A., Eshel, G., Noor, E. & Milo, R.PNAS, 2018DOI: 10.1073/pnas.1713820115
Quantifies the calories and protein lost when crops are routed through animals: replacing animal foods with plant equivalents could feed an additional 350 million people in the US alone.