I need an app icon that reflects that this app is about getting educated about the world in general. The app still doesn't have an official name, and the user interface is far from completely fleshed out; however it will have a clean, professional look, and the icon should reflect that. In fact, more than reflecting, this icon could influence the future design of this app.
The original icon design needs to be in a 1024x1024 format, but should also look great on at the smaller resolutions it will be displayed in on devices. Since the app is targeted for iOS 7, only the retina icon sizes need be considered.
The icon doesn't need too many colors, a palette of at most 3 will suffice. As mentioned previously, I'm looking for something clean that scales well. Please avoid including flags or words in the icon. A globe with or without a grid may be a good place to start (see attached images), but I am open to other ideas as well.