By shifting the angle of the interior rear-projection system, Mitsubishi has cut the size of its 42-inch widescreen HD-ready TV
by 15 percent. Bypassing expensive LCD, DLP, and plasma technologies, Mitsubishi used CRTs, standing them vertically instead of at an angle in its WS-42311 model. The approach creates a svelte 39- by 25- by 31-inch form. Price: $2,199.
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.