"Tossing out a perfectly edible cup of yogurt every once in a while does not seem that bad. But it adds up. According to a survey by the Harvard Law School Food Law and Policy Clinic, the Johns Hopkins Center for a Livable Future, and the National Consumers League, 84 percent of consumers at least occasionally throw out food because it is close to or past its package date, and over one third (37 percent) say they always or usually do so.
That food waste in landfills generates carbon dioxide and methane, a greenhouse gas 28 to 36 times more effective at trapping heat in the atmosphere than carbon dioxide. And you are not just wasting calories and money. You are wasting all the resources that went into growing, packaging and transporting that food."