You might want to think twice before you throw out those breakfast scraps! There’s a much smarter way to use unwanted food items to reduce waste and live more sustainably—and give your garden a boost.

The next time you crack an egg in the kitchen, save the shell. Eggshells contain important nutrients that can enrich your compost pile or feed plants, including tomatoes. Using eggshells on tomatoes ...

DEAR DR. ROACH: Why don’t we eat eggshells? Aren’t they full of calcium? -- C.S. ANSWER: We can eat eggshells, but I don’t recommend it unless you are willing to go through some preparation to make ...

We may receive a commission on purchases made from links. Eggs make a nutritious meal for plants as well as people. Unlike most humans, plants prefer the shells, which are rich in calcium carbonate.