Scientists Discover an Amazing New Use For Your Leftover Coffee Grounds

Researchers at Jeonbuk National University turned spent coffee grounds into a biodegradable insulation composite.

They dried the grounds, converted them into biochar, and mixed it with a natural polymer and solvents.

In lab tests, the material showed thermal performance comparable to expanded polystyrene foam.

The study suggests a low-waste way to reuse coffee byproducts in sustainable building materials.