Using technology developed at the University of Maine, a Newton company is pursuing a simple enough idea: Why not turn cardboard boxes used just once into the fluffy cellulose insulation that is ...

Cellulose insulation is made from recycled newspapers, a dwindling resource. CleanFiber thinks its cardboard process can make up the difference.

Cardboard is made from wood fibers and processed into a thin, strong sheet. It is biodegradable and breaks down over time, allowing it to have several applications in the garden.