According to the Engadget, when the users type 'fun facts' on the Google homepage, the search engine will serve the users with a new type of answer box filled with a random tidbits from the millions of websites that Google can search.

The source of that particular information will be given below, followed by a blue bar with the option to 'ask another question'. When the users click on that they will be presented with yet another random piece of information, with the 'I'm feeling curious' query in the search field.