The Beatles are one of history’s most influential rock bands, but unless you’re a music history buff, there’s a chance you don't know a ton about the Fab Four. In the video above, mental_floss List Show host John Green doles out 28 obscure facts about the careers and lives of Ringo, Paul, George, and John. Find out whether or not the “the” in “The Beatles” is supposed to be capitalized, which concert two band members’ future wives both attended, what the puzzling lyrics sung in "I Am The Walrus” really mean, and more. (Just don’t be offended by how many times Green compares them to One Direction.)

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