food waste

Consider this paradox: The more nutritious our diet, the more food we throw away, and the more it takes from our environmental resources. Which begs the question: Does virtuous eating have an environmental cost?
Wasting food, a precious resource, is bad. Does French regulation make for less waste? Or could there be an equally simple free-market solution?  
Preservatives help keep our food supply safe and reduce food waste. Apparently, Panera Bread is unaware of this.