Green architecture is often impractical, too expensive, or just plain horrid to look at. Not so the M Cube, a prefab modular dwelling made up of translucent fiberglass in a steel frame. At first the structure looks monotone, but the pics and video of the interior show the potential of M Cube’s spaces. The infusion of natural light throughout is inviting, practically begging for an indoor garden, and the solar heated floors are a nice touch, too. Designer Mark Baez is definitely onto something here.