Yahoo has just announced Yahoo News Digest, an app that summarizes all the biggest news of the day into short easily consumable chunks. Summly's Nick D'Aloisio is heading up the venture, and he came on stage to describe how the app works. A large cover image greets you on the splash screen while a cluster of headlines lie underneath. The app is designed to summarize news twice a day from multiple sources, and the news chunks have contextual information like maps and tweets baked right in. Infographics, stock tickets, scoreboards are part of the app, and it'll prompt you when you're done reading.