RICHLAND, Wash. — Scientists at Washington State University have found a new way to produce sugar from corn stalks and other crop waste, potentially opening a new pathway to sustainable biofuels. Newly published in Bioresource Technology, their experimental process used ammonium sulfite-based alkali salts to convert corn stover — leftover corn stalks, husks, and other residues — into low-cost sugar for production of biofuels and bioproducts, making the process more economically feasible. “Inexpe...