What do you smartphone apps say about you? Not in the “who am I and what is my place in the world?” sense, but literally--what are your apps telling other people about you? Your location? Your identity? Your username and password? The Wall Street Journal has put online a pretty amazing, sometimes outraging, definitely interesting interactive graphic analyzing 101 popular iPhone and Android apps, telling you exactly what your apps are telling other people.
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.