Apps, apps, apps! Smartphone apps are getting a lot of attention these days and for good reason: new, innovative applications are allowing us to make connections between the virtual and physical worlds we never thought possible only a few years ago. But while most of the attention is focused right now on the hot new apps (ahem foursquare) that make life more connected and convenient for you, there are also several great new smartphone apps that can help you fight to make the world a better place. Read on for our favorite smartphone apps that can help you save the world.