All-in-ones like Apple's iMac are great for saving space, but they lose one defining characteristic and advantage of desktops: easy component swapping. HP's newly announced Z1 aims to change that--it lets you pop the hood and swap out the hard drive, memory, and graphics card, all without any tools needed. Read more 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.