Add Yahoo as a preferred source to see more of our stories on Google. Kieran Mitchell, CEO of Caribou Biofuels in Salida, Calif., talked about using walnut shells in activated-charcoal filters on Dec.

Scientists from the University of Nottingham and CSIRO Australia have developed a cutting-edge model to evaluate the energy efficiency of walnut and pistachio shells as low-carbon fuels and better ...

One of the biggest benefits of walnut cat litter is that it’s an environmentally friendly choice. The walnut shells are biodegradable and natural, and as a food industry byproduct, they would ...