Plastic, long considered nonbiodegradable and one of the biggest contributors to global pollution, might have met its match: The small, brownish, squirmy mealworm. Researchers have learned that the mealworm can live on a diet of Styrofoam and other types of plastic. Inside the mealworm's gut are microorganisms that are able to biodegrade polyethylene, a common form of plastic, according to new studies published in Environmental Science and Technology. The findings could help solve the plastic pollution problem affecting the world. The research documented 100 mealworms that consumed 34 to 39 milligrams of Styrofoam, which is about the weight of a pill, every day. Scientists also paid attention to the mealworms' overall health and saw larvae that ate a diet subsisting strictly of Styrofoam were as healthy as mealworms eating a normal diet of bran, [and] transformed the plastic they ate into carbon dioxide, worm biomass and biodegradable waste. This waste seemed safe to use in soil for plants and even crops, the studies said. Being able to find insects that can safely degrade plastic is critical to potential pollution management because other insects such as cockroaches can also consume plastic, but they have not shown biodegradation.
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