Scientists at MIT have developed an anti-fogging glass that utilizes a "superhydrophillic — water loving — coating [that] is composed of nanoparticles made of silica, the same material that glass is made from, to create a coating with a rough surface, although it looks smooth to the naked eye." The result is a surface that not only does not fog up but also lets more light in, acting as an anti-reflective coating that improves transparency. The page contains a video demonstration and interview. Very cool...