A Colorful, Sustainable Solution for 3-D Printing Researchers at Pacific Northwest National Laboratory (PNNL) have developed seaweed-based inks and materials for developing colorful 2-D and 3-D shapes and models. The innovation is called ArtSea Inks and Materials. The set of vivid inks—think a futuristic upgrade from yesteryear’s eight-pack of Crayola crayons—was developed using...