Gardener with basket of egg shells spreading crushed shells around tomato plant - VH-studio/Shutterstock A quality eggshell contains about 2.2 grams of calcium carbonate, the compound that gives them ...

“Architects through the ages have modeled buildings after the dome of the egg,” says Patrick Biggs, Ph.D., a flock nutritionist for Purina Animal Nutrition. “A dome shape offers strength and ...

Using food waste like coffee grounds in the garden is a win-win, and if you happen to eat a lot of eggs, there's good news — you can use those discarded shells to benefit your greenery. Eggshells are ...