It’s called Google Trends, and here’s how to access it:
First, browse over to Google.com, and in the upper part of the screen, click more, then even more>>.

On the next page, scroll all the way to the bottom and you’ll see Trends – click on it.

Now, here’s where it gets cool. Like Yahoo!, Trends shows you what current topics are popular at the moment, but if you put in a search term and hit “Search Trends” you’ll see this:

Yep, it’s a graph that shows not only the height of popularity regarding your search term, but also any news stories associated with it! Try imputing a bunch of different stuff and see what you come up with!
How fun!
~Andrew

