A new year, new obscure tools, and more stuff to give away. The last installment of our contest proved way too easy, so let's see if this one is a bit more of a challenge. Tell us in the comments what this is and the first and most precise answer will receive a Stanley FatMax tape measure.
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.