The Food We Waste

Have you ever bothered to take into account the amount of scrap food we throw away?
If every household in American would consciously begin to save a mere couple ounces of food per day, it would more than likely be enough to feed all Americas homeless children three solid meals a day for the entire year.
How much food do we waste?
What are some better ways I can be part of the solution....
and not the part of the problem?