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What is the benefit of PLA?

Much of this article came from the Smithsonian Magazine written by Elizabeth Royte – to whom we owe our gratitude.

Near Blair, Nebraska is the largest lactic acid plant in the world. Into one end goes corn, and out the other comes white pellets, which some say is the future of plastic. The substance is PLA – Polymerized Lactic Acid, or polylactic acid.