Nvidia had a surprising announcement left for the end of an otherwise hyperbolic press conference: a chip known as "Project Denver" (mysterious!) that'll be the company's first processor, based on the ARM core but destined for higher-power machines. What does that mean in real-world terms? It means your next laptop might have amazing battery life, maybe even the mythical all-day battery, without sacrificing too much performance.
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.