ED 262 Research, Reference & Resource Skills

Most amazing of all, Google made this tool available for free. This despite an educational -- and, let's be honest, entertainment -- value that's virtually impossible to measure.

What you maybe didn't know is that Google has long offered a Pro version of Earth as well, one that cost a hefty $399 per year. Now, however, you can get Google Earth Pro absolutely free.

First things first: The words "free trial" still appear in that URL, but as you'll see when you click through to the sign-up page, "Sign up is no longer required for Google Earth Pro." All you have to do is download the installer, run it, then sign in using your e-mail address (as your username) and license code GEPFREE.