https://m.phys.org/news/2017-04-caterpillar-bags-biodegradable-solution-plastic.html Scientists have found that a caterpillar commercially bred for fishing bait has the ability to biodegrade polyethylene: one of the toughest and most used plastics, frequently found clogging up landfill sites in the form of plastic shopping bags. via Caterpillar found to eat shopping bags, suggesting a biodegradable solution to plastic pollution.