Google‘s long-awaited answer to Flipboard, the “social magazine” exclusively on Apple‘s iPad and iPhone, just debuted today. Google Currents offers a similar appearance, except it works on Android devices as well as iPads and iPhones. It’s the latest in a long string of applications, most recently Yahoo‘s Livestand, that seek to turn online content into something resembling print magazines, but without all those dead trees and with 20th century innovations like, say, video.