Have you ever thought of getting alerts on land disasters like earth quake, right on your desktop. eQuake is the solution for that.
Here is more information about this add-on:
eQuake alert is a handy add-on, which alerts you with the basic information (date, location, and magnitude) of each earthquake. By default your browser will shake proportional to the earthquake magnitude. You can configure the alert methods and even you can limit the alerts by the earth quake magnitude. The recent quakes menu provides a link to the detailed information of quake @ the USGS (US Geological Survey) website.
Want to learn more? Check it out on the Firefox Add-ons website.