Inhabitat's Week in Green: Darth Vader lamp, 3D-printed inchworm and a cheap invisibility cloak

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. As scientists and renewable-energy developers continue to make advances in solar and wind technology, it's becoming more apparent than ever that clean energy doesn't just represent the future -- it's also the present. Spain proved that this week, when the Mediterranean country announced that it produced an impressive 54 percent of its total energy in April...