Google has added a new feature to NotebookLM that lets the AI note-taking tool find its own web sources to summarize and narrate. Instead of manually uploading sources like documents or YouTube links, users can now tap the “Discover” b***on and simply describe the topic they want to get a better understanding of, with the tool then gathering web sources around the subject.Google says the Discover feature started rolling out on Wednesday, and will take “about a week or so” to be available to all users.NotebookLM will hunt through “hundreds of potential web sources in seconds” according to Google, a***yzing the most relevant options and then presenting a list of up to ten recommendations, each with a summary explaining its relevance. Users can select which of these sources they want NotebookLM to reference, and import them to use in other features, including FAQs, Briefing Docs, and podcast-like Audio Overviews that use AI hosts to discuss a topic.Sources will be saved within NotebookLM to allow users to read them directly and use them as references for citations, note-taking, and question-answering capabilities. Google says that Discover sources is the first of several Gemini-powered NotebookLM features that are being developed to make it easier for users to find relevant notebook reference materials.Another capability spun from this is “I’m Feeling Curious” — a b***on that prompts NotebookLM to generate sources on a completely random topic. It’s a good way to see what the feature is capable of, but also a fun way to learn about new subjects, much like Wikipedia’s random article feature.