Biodegradable Noise-Cancelling Mycelium Earplugs Are Solving A Decades-Long Plastics Problem
For half a century, the humble foam earplug has been a masterpiece of single-purpose design. It is a small cylinder of polyurethane, expertly engineered to expand in your ear canal and dampen the world. Its simplicity is its genius, and its disposability is its convenience. We use them by the billion to sleep on airplanes,…