Sustaining World's Food Production (IMAGE) Stevens Institute of Technology Caption In this model of how phosphorus flows through the agricultural system, "knobs" can be turned up or down to create different conservation scenarios. When a knob is turned -- e.g. fraction of animal meat in diet, fraction of food that is wasted, fraction of human waste recycled - the model, which factors in leaks and losses from the food system, loops back to calculate the degree to which phosphate mining could be reduced. Credit Stevens Institute of Technology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.