HP, 3M, and UC Santa Cruz (go Banana Slugs!) have been collaborating on a truly remarkable project. Instead of using flat paper for photo printing (which can't change its reflective properties), the researchers are creating a new kind of paper with specular micro-geometry. In other words, it looks like regular flat paper to your eye, but its surface is actually covered in thousands of microscopic hills and valleys. We can print onto those tiny shapes to control the way the light reflects from different angles. The result is that the object in a photo would reflect light the same way as the object would in real life. Or so your eyes would perceive.