How shrimp shells could replace plastic bags

Plastic bags are a global problem. Annually, some one trillion of them are used around the world, and fewer than 5 percent are actually recycled. This means a massive buildup of waste, litter, and chemical toxins in the atmosphere.

Material engineering professor Nicola Everitt, from The University of Nottingham in the U.K., thinks she might have the solution: Shrimp shells.

For the past year, Everitt has been working to turn crushed up crustacean shells into biodegradable plastic bags so...

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