Mental Floss (stylized as mental_floss) is an online magazine and its related American digital, print, and e-commerce media company focused on millennials. It is owned by Minute Media and based in New York City, United States. mentalfloss.com, which presents facts, puzzles, and trivia with a humorous tone, draws 20.5 million unique users a month. Its YouTube channel produces three weekly series and has 1.3 million subscribers. In October 2015, Mental Floss teamed with the National Geographic Channel for its first televised special, Brain Surgery Live with mental_floss, the first brain surgery ever broadcast live.