Google makes Google Earth Pro free to reach everyones PC.
Earlier the software cost a staggering $399 to use every year.
Both the softwares are equally beneficial but the two versions have some major differences.
It also allows importing of images that have more than the max texture size allowed by Google Earth.
Next, Google Earth Pro gives businesses and market researchers access to multiple layers of demographic data.
At least 500MB of storage and 512MB of RAM are needed.
Google Earth was acquired by Google as EarthViewer 3D, a project of the CIA-backed Keyhole, in 2004.
source: www.techworm.net