When you’re working in tight quarters, you can never have too many adaptors. The CalVan gearless 90-degree socket adapter turns smoothly (read: no "clicking") and exceeds the ANSI torque specs for universal socket adapters. You won’t need it everyday, but once is enough when you’re stuck with a bolt that won’t come loose.
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.