In addition to the new similar image search, Google has also announced the addition of Google News Timeline as a Google Labs experimental service.
Google News Timeline is what it sounds like -- a tool that lets you see news coverage over a period of time. A search for "somali pirates" showing weekly coverage looks like this:
But it's also more than a simple news timeline, because Google has added a number of user controls that lets you customize the tool in several different ways. You can:
choose from a variety of news types, such as newspapers, magazines, blogs, videos, images, [...]
Related Topics: Channel: Content | Features: General | Google: Labs | Google: News | Top News