In the aftermath, Google set out to preserve imagery it had captured prior to the disaster, including original Street View recordings that became an unintended time capsule. It was an unusual site considering Google’s standard operating procedure: a feverish pace of updates that erased the old with the new and never looked back. Google’s changing that now with a feature that lets you step back in time to earlier versions of its Street View data, going back to 2006. Since then, each time the company updated Street View data, it also quietly kept the older versions.