Today Google announced that the Google Earth browser plug-in is now available for use in Mac OS X. You can get the plug-in from the Google code page. The new plug-in makes GIS laden websites like Earth Swoop more user friendly for Mac users. It also means that students now have more flexibility in the type of map content that they can create.
You can check out the introduction to the Google Earth browser plug-in in the video below and grab the plug-in here.