Google Earth Pro has a lot of advanced features that aren't available in the regular Google Earth:
* premium data layers for the US: demographic, parcel and traffic
* advanced GIS data importing features
* measure area, radius and circumference on the ground
* print high-resolution screenshot
* movie maker: record and save 3D imagery
* no more ads
"Over the last 10 years, businesses, scientists and hobbyists from all over the world have been using Google Earth Pro for everything from planning hikes to placing solar panels on rooftops. Google Earth Pro has all the easy-to-use features and detailed imagery of Google Earth, along with advanced tools that help you measure 3D buildings, print high-resolution images for presentations or reports, and record HD movies of your virtual flights around the world," informs Google.