Home theater PCs (HTPCs) have kind of fallen out of favor as simpler, more efficient media gadgets have sprung up. But as we found with the Apple TV, sometimes simpler doesn't mean better. Our friends at Sound+Vision took a second look at the HTPC, and found some distinct benefits for the DIY-minded: a cheap price, endless possible upgrades, and lots of flexibility and power. Check it out here.
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.