Google Earth adds 'back time' feature

Google has added a feature to see historical changes to locations, lands . for its Google Earth online mapping program.

Google Earth engineers have digitized one of the largest map collections ever, and integrated information into an online mapping program, enabling viewers to see changes in the past. space of geographic regions.

Additional digitized atlas include: Historical Maps (by David Rumsey - from 1680 to 1892); Globe (of Cassini - 1970); and European map A 'since 1710.

Google also added the National Geographic interactive testing program - focusing primarily on the Americas region into Google Earth.

Since its launch in June 2005, the number of downloads of Google Earth has reached 100 million.