SEOUL—“Baby Shark Dance,” the aggravatingly addictive children’s tune, is YouTube’s most-watched video ever. It has been played, on average, more than 4.7 million times a day since its 2016 upload.

YouTube has completely changed the way the world consumes content. Every day, cooking tips, film trailers, how-to-videos, educational videos, music albums and more-billions of videos are uploaded and ...

Five billion videos are watched on YouTube every day, but only a certain few rack up enough views to crack the 1 billion mark ...

Jimmy Kimmel is back on the airwaves, and his opening monologue from his Tuesday night return to ABC is already shaping up to be one of his most-watched ever. The 23-minute YouTube video has racked up ...