Overlays of Historical Maps

How has our view of the world changed over the years?  Turn on the Rumsey Historical Maps under Gallery - Rumsey Historical Maps.  Select one map.

Answer the question above.  Consider the role accurate maps has played in history.
http://googleblog.blogspot.com/2006/11/old-world-meets-new-on-google-earth.html

Flight Simulator

The flight simulator is available by default in the Tools menu in the new version of Google Earth. Try adjusting the sun’s feature while flying over mountains or a city, e.g. set the sun to appear on the horizon, at dawn or sunset.  The flight simulator is even more fun if your computer has a joystick.

Google Earth User's Guide: Flight Simulator
http://earth.google.com/userguide/v4/ug_flightsim.html