An old proverb says you’ve got to crack a few eggs to make an omelet. Most people then toss those eggshells out. Indeed, a lot of eggshells end up in landfills, observes Boniface Tiimob. He’s a materials scientist and graduate student at Tuskegee University in Alabama. But now, he says, there’s a promising new use for that waste. Those shells can be recycled into packaging for more eggs or other goods.