18-Year-Old Creates Plant-Based Plastic Designed to Remove Microplastics

What would happen if plastic could clean up after itself?

That's not a thought experiment anymore. It's Eco Purge, a plant-based plastic invented by 18-year-old Arya Satheesh, a student in Ireland. Most plastic just breaks into smaller and smaller pieces over time, eventually scattering into the microplastics now found in oceans, soil, and even human blood. Satheesh designed hers to do the opposite: as it biodegrades, it releases enzymes that actively break down other plastics, including the microplastic fragments already polluting the environment around it.

The idea flips the usual plastic story on its head. Instead of a material that lingers and fragments into an ever-growing mess, Eco Purge is built to degrade on purpose and take some of the existing mess down with it. Rather than one more source of pollution, it works more like a cleanup crew that happens to be made of plastic itself.

This is what makes the invention genuinely remarkable. Microplastics are notoriously hard to deal with because they're already everywhere and nearly impossible to collect. A material that seeds its own breakdown process with plastic-degrading enzymes offers a way to attack the problem from the inside, at the molecular level, rather than trying to filter or scoop up particles after the fact.

The judges of The Earth Prize agreed it was worth backing. Satheesh's project won the European category of the 2026 competition, one of the largest teen environmental prizes in the world, spanning seven global regions with $100,000 in total awards on the line. Her share, $12,500, is meant to help her take Eco Purge from a promising idea toward something closer to real-world use.

It's a reminder that some of the most useful science right now isn't about inventing something entirely new. It's about redesigning an old material so its ending actually helps clean up the mess its predecessors left behind.