Engineers 3D print compostable packing material from coffee and mushrooms

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Engineers 3D print compostable packing material from coffee and mushrooms

Engineering is about creating new and useful things but it’s also about finding new uses for old things. That spirit of innovation motivated Danli Luo, a doctoral student at the University of Washington, to find a use for the old coffee grounds from her espresso machine. Luo realized that since coffee is nutrient-rich and sterilized during brewing, it’s an ideal substrate for growing fungus. Moreover, in the early stages of its development – bef…