These are items that are no longer visible because newer imagery has hidden them. However, you can use the time slider in Google Earth 5.0 to view most of them if you want.
I simply took the xml data feed from the google labs ridefinder and parsed it to kml... its done on the fly, but the xml feed doesnt seem to update every minute, more like every 2 mins. If for some reason it isnt working... Google might have pulled the stream. I put it on manual refresh, so you can control it. Its based on your view - so I am not sure if time based refresh will work...
While looking for any visible research stations in the Antarctic I found this boundary line. Looks pretty cool becaouse it's compounded, so it looks like a reverse ice shelf coming in from the bay.
Editors note - IMPORTANT - You need a powerful computer to load this one, and be sure you are zoomed out to at least 8,000 miles high.
As Google Earth Free doesn't allow viewing planets other than Earth, I created these planet overlays form various sources (see info in overlay folder). Please note that some of these images have very high resolution and are thus quite large...
The Google Globe Assistant will show automatically GoogleGlobe spots nearby your current location at the GoogleEarth Globe. Also downloadable from http://www.googleglobe.com
This pack includes real-time traffic maps for the Los Angeles, San Francisco, San Diego, San Jose and Sacramento metro regions; all provided by Sigalert.com. I think this overlay type is much better than any kind posted before. It just displays traffic and accident indicators, no background map.
Crop circles are one of the most profound and mysterious phenomena of the modern age. Are they a communication from extra-terrestrials? Evidence of other dimensions or a catalyst to advancing our way of thinking?