It's a classic dilemma: the milk smells fine, but the expiration date says it's past its prime. Most people lean on the safe side and throw away food that may have gone bad. But expiration dates are rarely precise, which means American consumers waste tons of food every year -- up to 40 percent of food produced, according to one study. Assemblyman David Chiu has proposed legislation that would make expiration dates distinguish between food safety and freshness. We'll discuss the bill and how it would change food labeling in California.