Food waste remains a problem, and what better day to highlight new solutions than Earth Day? A new app from Cornell University, FMI, and USDA aims to alleviate food waste by removing the uncertainty about whether or not food is still safe to eat. David Fikes of FMI reports that 20 pounds of food per person is wasted each month in the US, a staggering amount. Much of this waste is caused by consumers who are concerned with food safety and would rather throw out an item they are unsure about than risk eating it. The new app is targeted at these consumers, and provides guidelines for how to determine if a food is past its shelf life, or if it is still safe to…