Before and After (image) University of Southern California Caption This is a still from an animation depicting the change in Google's search infrastructure. To view the full animation, visit http://nsl.cs.usc.edu/~mcalder/animatedmap.gif. Credit Matt Calder / USC Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.