Sent to you by john taube via Google Reader:
Earthquakes are not the only thing that can shake Silicon Valley. After the dot-com bubble burst back in 2000 the unemployment rate of
Santa Clara county went up to 9.1%. During the last couple of months, it has gone up again:

We just launched a new search feature that makes it easy to find and compare public data. So for example, when comparing Santa Clara county data to the national unemployment rate, it becomes clear not only that Santa Clara's peak during 2002-2003 was really dramatic, but also that the recent increase is a bit more drastic than the national rate:

If you go to Google.com and type in [unemployment rate] or [population] followed by a U.S. state or county, you will see the most recent estimates:

Once you click the link, you'll go to
an interactive chart that lets you add and remove data for different geographical areas.
Here's a video showing how it works:
Things you can do from here: