Google Earth
Create Or Open A Project

Create a project

Note: Your changes are automatically saved when you create a project.

Open your project directly from the menu

Open your project directly from Google Drive

You can auto-save your project to Google Drive, where it can be shared with others, and collaboration can be done online. Once shared, others can open the same project in their browsers and edit them.

Turn on your browser storage

Note: You can also save to browser storage on your computer. To save to your computer, turn on “Enable browser storage” in the Settings menu.

Create a KML file

Note: KML files will be saved in your browser storage on your computer.
It will not be saved in your Google Drive unless you choose the option to "Create Project In Google Drive."

Taken From Google Earth Help