Reuters: A new chemical process may help unlock biofuels from trees and plant waste in a shift from using food crops such as sugar cane to generate fuel, scientists said Thursday. They said they found an enzyme that helped break down chitin, a stiff material similar to woody cellulose that is found in the skeletons of crustaceans — such as lobsters or crabs — as well as insects. "We regard this as a breakthrough," Gustav Vaaje-Kolstad, a Norwegian scientist who led the study in the …