Google Earth used to be a program one had to download, install, and update - but no longer.
For those who have Chromebooks or the Chrome browser, Google Earth is available online: http://earth.google.com (You must use the Chrome browser to access it.)
This is exciting news for teachers who can now make use of KML and KMZ files to highlight geographical locations found in literature, history, and science. So, for example, one can follow the apostle Paul on his missionary journeys.
I found this "Google Lit Trip" for Mary Shelley's Frankenstein which we just completed reading: There are Google Lit Trip KML files for Make Way for Ducklings, Paddle to the Sea, Around the World in 80 Dyas, the Odyssey, the Aeneid, the Life of Luther, and more.
You can search for KMZ and KML files by including "file:kmz" or "file:kml" in your Google search bar -- and by learning more about Google Lit Trips. (I plan on creating some for the missionary journeys of St. Paul, but if someone else beats me to it, let me know!) See How to Create a Google Lit Trip.