Disinformation campaigns often directly go after young users, steering them toward misleading content. A 2018 Wall Street Journal investigation found that YouTube’s recommendation algorithm, which offers personalized suggestions about what users should watch next, is skewed to recommend videos that are more extreme and far-fetched than what the viewer started with. For instance, when researchers searched for videos using the phrase “lunar eclipse,” they were steered to a video suggesting that Earth is flat. YouTube is one of the most popular social media site among teens: After Zeynep Tufekci, an associate professor at the University of North Carolina, Chapel Hill, School of Information and Library Science, spent time searching for videos on YouTube and observed what the algorithm told her to watch next, she suggested that it was “one of the most powerful radicalizing instruments of the 21st century.”…