Grocery stores go through so much food spoilage that thousands of tons end up in dumpsters around the country. Some grocery ...

When food expires at Walmart stores across the country, here's how the chain uses the excess food in an effort to be a little more green.

Add Yahoo as a preferred source to see more of our stories on Google. Walmart basket and produce - JRomero04/Shutterstock Food waste is a huge issue that has only recently garnered serious attention.