Google is now rolling out the related topics search filter feature on desktop search results. The related topics filter first launched on mobile search last December. Google posted this news on Twitter:“Last December, we made it easier on mobile to explore topics related to your search. Related topics appear alongside filters at the top of the search results page.”Google has been testing this on desktop for several months. This is a new change to the Google interface that may impact what people see and click on within the desktop search results.