John B. Carnett, PopSci's staff photographer, is using the latest green technology to build his dream home. This is the first entry in his new blog tracking the build--follow along at popsci.com/green-dream
No, it's not a death ray. The folks at RawSolar are creating what looks like a very affordable solar thermal tracking dish. This is a mini version of the concentrating solar power systems you see commercially in the 25 kilowatt range.
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.