Quick quiz: which consumes more power, an "energy-efficient" 55-inch LED TV, or the 90-foot "Patterned by Nature" video installation at the North Carolina Museum of Natural Sciences? It's actually a trick question, because the sculpture does eat less power -- just 75 watts -- but then it only has a fraction of the TV's pixels. Each of its 3600 "dots" is in fact a 6-inch glass pane which can vary its transparency, a decidedly more lo-fi approach than
