Silhouettes of laptop and mobile device users are seen next to a screen projection of the YouTube logo.Dado Ruvic | ReutersGoogle is using its expansive library of YouTube videos to train its artificial intelligence models, including Gemini and the Veo 3 video and audio generator, CNBC has learned.The tech company is turning to its catalog of 20 billion YouTube videos to train these new-age AI tools, according to a person who was not authorized to speak publicly about the matter. Google confirme...