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 ...

I know you are big fans of nuts, especially walnuts, but I've just heard that walnut shells are bleached before being sent to market. Is this true? If so, is it dangerous? Does it damage the nut ...