This one is interesting:

Eat Your Leftovers

It's estimated Americans throw away 15 percent of the food they buy each year—enough to feed millions of people.  Not sure when it's time to toss? StillTasty.com tells you how long to safely keep thousands of products.

I'm known for eating old food in our house (-:

Old meat?(not smelly of rotten yet) Boil it to kill the bacteria.

OK, take that advice with a grain of salt.