Google has added two new ‘views’ of search results: the Wonder Wheel and the Timeline. Wonderwheel creates a simple topic map of results with the search query in the center and related searches branching out. Clicking on any of the related search expands the topic map to include more nodes.
The timeline view, as you might imagine, creates a timeline based on dates associated with the documents found in the search. To try these out, do a search on Google and then look for a link labeled ‘Show Options’. In the left-hand menu you will find links to ‘Wonder Wheel’ and ‘Timeline’