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.

It is expected that global food demand will increase in a range of 59–98% by 2050 1. An increase in food production will consequently lead to an increase in food industry waste. The generation of ...