Have you ever been tempted to order steak tartare but decided against it for fear of getting sick? This little cell phone scanner can take a look at it for you and let you know if it does in fact harbor any E. coli bacteria.
The problem with cell phone cameras is that, when you cram all the components of a larger camera into the tiny packages necessary to let them ride inside your phone, you drastically minimize their ability to capture light. But a new technology utilizing quantum dots could vastly improve the quality of your Leibovitz-like attempts at cell phone artistry without adding significant size or cost to your cell.
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.