It's a web app that organizes search results chronologically. It allows users to view news and other data sources on a browsable, graphical timeline. Available data sources include recent and historical news, scanned newspapers and magazines, blog posts, sports scores, and information about various types of media, like music albums and movies. If you're a financial crisis junkie and you need to see how the economy is shaping up day by day, this one's for you. Thanks, Google, for always trying to make our lives easier!