All my Google Earth overlays (except those under Best Findings) are under the following license:
Creative Commons License: Attribution-NonCommercial-ShareAlike 2.5
You are free:
- to Share -- to copy, distribute, display, and perform the work
- to Remix -- to make derivative works
Under the following conditions:
- Attribution. You must attribute the work in the manner specified by the author or licensor.
- Noncommercial. You may not use this work for commercial purposes.
- Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under a license identical to this one.
- For any reuse or distribution, you must make clear to others the license terms of this work.
- Any of these conditions can be waived if you get permission from the copyright holder.
Image by mortek
For more information and translations, see here: