Sony's conference at CES had one obvious theme: Make everything 3-D. It seemed like everything they announced last year was back, except now it's in 3-D. That includes camcorders, cameras, pocket camcorders, TVs, Blu-ray players, and laptops. Pretty much the only thing that wasn't 3-D was the new Sony Ericsson Xperia Arc--a really nice-looking Android smartphone focused on entertainment and media above all else.
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.