Los Angelenos have recently watched billowing clouds from a nearby wildfire hover overhead, in scenes reminiscent of "Volcano." NASA's Terra satellite took the opportunity to snap a photo of the smoke monster on the night of August 30. Red outlines in the photo indicate wildfire hotspots.
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.