On its fifteenth birthday, Google is rolling out a massive revamp of its search engine. The user interface looks the same, but behind the scenes, Google is attempting to answer much more complex questions — like the ones we ask via voice on our mobile devices. In the last decade an a half, it’s hard to remember a time when Google held such a dominant position in the search market.

+ Here’s a look at 10 milestones that have shaped Google Search.

+ Rebecca Greenfield looks back at the web before Google.

+ For fifteen years, we’ve all been Googling ourselves. We used to ego search hoping to find something. Now we hope we don’t find too much.