Scientists at the Department of Energy’s Oak Ridge National Laboratory created a recipe for a renewable 3D printing feedstock that could spur a profitable new use for an intractable biorefinery byproduct: Lignin. The discovery, detailed in Science Advances, expands ORNL’s achievements in lowering the cost of bioproducts by creating novel uses for lignin – the material left over from the processing of biomass. Lignin gives plants rigidity and also makes biomass resistant to being broken down int...