Today in pretty space pics: Behold, the Carina nebula--but not as it looks with the naked eye. Astronomers at the Atacama Pathfinder EXperiment (APEX), unsatisfied with the visible light spectrum images taken of this stunning swirl of blue interstellar dust, decided to begin imaging the region in sub-millimeter light invisible to the eye (represented by the the orange in the image above). Aesthetically speaking, it wasn’t a bad idea.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.