Smart city, smart planet: Sensity is creating a billion-node network of global sensors — in street lights

There are over four billion street lights in the world. Almost all of them are high-intensity discharge lights that use mercury vapor or some other toxic substance to create light. All of them are powered, and most burn out every two years.
Now what if all these could become nodes on a sensor network spanning the entire globe?

Apps, apps, apps: Who’s winning and what’s working on Google Play and iOS

App Annie released its May apps index this morning– all apps minus games — and the giants are doing well: Microsoft, Google, Apple, and Facebook are well-represented on the top publisher lists. But there’s also some surprises, and some new entrants to the most-downloaded and highest-grossing app leader lists on iOS and Google Play.