Gavin clears the table of depressing headlines to serve up a "High-IQ" Thanksgiving episode. He revisits quiz rounds where we actually learned something, like figuring out Prime Minister Mark Carney's habit of dressing up politics as poetry, and trying to understand the collapse of the planet's biggest carbon sink. And it wouldn't be Thanksgiving without talking about the competitive intensity of the sperm races. We'll be back with an all-new episode next week. 

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