Now there is a site, GEteach, developed by 9th-grade Geography teacher Josh Williams. The site uses the Google Earth Plug-in to give you quick access to a wide variety of information such as the CIA Factbook, population densities, and various other human and physical geographic overlays with a “Two Earth” mode, allowing you to view different layers side-by-side.
Source: Google Earth Blog
Sachiye Day, VERTICES research assistant. firstname.lastname@example.org