Almond industry is searching for the best use, even from shells and hulls. New products could be used as additive, to improve recycled plastic or even to turn tires black.

Inside a USDA research building near Berkeley, California, research leader Bill Orts holds up a mottled-looking black plate. It’s “really ugly,” he says. But the rough prototype is the first of its kind, made with recycled plastic and almond shells that were transformed into a charcoal-like black powder in […]

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