Plastic bags are a bane of modern life. As you read this, nearly two million of them are being used around the world right now. By the time the year is over, this number will probably reach a trillion, ending up in landfills, oceans, streams, and the digestive tracts of marine animals. Over the years, scientists have been coming up with various solutions to tackle this problem, from devising ways to give it a second lease of life to making greener and more sustainable plastics. But nature might have a simpler solution: wax worms.