Google added some new labels to Google Earth. Now when you turn on the "Borders and Labels" in the Layers menu you can view labels for mountain ranges, deserts, and plains. For large mountain ranges, deserts, and plains that can't be viewed in their entirety without zooming way out, you can mouse over a feature to see the full extent of that feature.
Applications for Education
Google Earth has added these new labels just in time for back-to-school season. Try them out with your students by opening the Layers menu on the left-hand margin of Google Earth and clicking the "+" icons to expand your options.