Google Earth 6: Enhanced 3D, 3D Trees, Enhanced Historical Imagery

Google Earth 6, introduced on November 30, 2010, enabled the user to "fly from outer space down to the streets with the new Street View and easily navigate. . . . Switch to ground-level view to see the same location in 3D."  

The program also introduced 3D trees in locations all over the world, and a more user-friendly interface for the historical imagery enabling comparison of recent and historical satellite imagery when available.