Animals and Insects

How Tiny Caterpillars Could Help Solve A Huge Environmental Issue

Wax worms are well-known for eating beehives' wax combs, but experts recently found the creatures also eat trash that can take 400 years to decompose.

How Tiny Caterpillars Could Help Solve A Huge Environmental Issue
Spanish Research Council

This tiny caterpillar could help solve one of the world's biggest environmental problems.

Meet the wax worm. This little larvae will one day become a wax moth.

Wax worms are typically used for fishing bait and are well-known for wreaking havoc on beehives by eating their wax combs.

But as one scientist at the Institute of Biomedicine and Biotechnology of Cantabria found, they also like to eat plastic. A lot.

Federica Bertocchini first noticed the caterpillars' affinity for plastic while she was cleaning up a wax-worm infestation in a beehive she keeps at home.

She put the wax worms in a plastic bag, tied it shut and continued to clean. But it didn't take long for the worms to chew through the plastic and escape.

Seagull eating out of a trashbin

A Lot Of Marine Animals Eat Plastic ⏤ Now We Know Why

Over 700 species have been seen chowing down on plastic that has made its way into the ocean.


From there, Bertocchini teamed up with researchers from the University of Cambridge to study just how well these little guys can munch away plastic.

They found 100 wax worms could break down 92 milligrams of polyethylene in just 12 hours.

That's pretty darn impressive. Polyethylene is a notoriously tough type of plastic to degrade.

Researchers say factories produce about 88 million tons of polyethylene each year for products like plastic shopping bags. And some of those products can take up to 400 years to degrade in garbage dumps and landfills.

But one of the study's authors told the BBC: "The caterpillar will be the starting point. ... We hope to provide the technical solution for minimizing the problem of plastic waste."