YouTube has been navigating a giant, uncharted problem: What do you when some of the videos on your site contain harmful misinformation? Confronting this problem has become even more pressing as the US moves toward the presidential election, and as Americans turn to YouTube for public health guidance throughout the pandemic.  CEO Susan Wojcicki explains what measures YouTube is taking to meet the challenge.   To learn more about how CNN protects listener privacy, visit cnn.com/privacy