Time Slider Feature
Thanks to the Time Slider feature in the upper-right corner of the 3D display, we can now explore the planet earth in a fourth dimension: Time. TimeStamp or TimeSpan allows visitors to track the evolution of their place marks.
Retrieved from the Google Earth website.
http://earth.google.com/support/bin/static.py?page=guide.cs&guide=22358&topic=22362&answer=183758



