Ken Jennings is a 74-time champion on the quiz show Jeopardy! and the author of the New York Times bestseller Maphead: Charting the Wide, Weird World of Geography Wonks. He writes a weekly column on geographic oddities for Conde Nast Traveler.

Join Ken every week as he explores a world of interesting geography facts and trivia on Ken Jennings’ Questions of the Week! New questions are posted every Sunday.

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Vladmir Lenin may have taken his surname from the Lena River, as he was sentenced to prison in this region between 1897 and 1900.