Food banks around the country are trying to keep their shelves stocked as more people in the U.S. struggle to get enough to eat. That means finding new ways to salvage food that would otherwise go to waste.

One innovation is being tested at the Second Harvest Food Bank of Northeast Tennessee, where a vacuum packaging machine is being used to test dented food cans for quality.

The machine can show whether a damaged can has any leaks that would jeopardize the quality of the food.

Second Harvest also plans to approach other potential donors, like hospitals, hotels, caterers, and restaurants that could donate prepared food that has not been utilized.

(READ the story at NPR)