It may be on the verge of extinction, but the humble penny is rich with history. Will and Mango dig deep into their pockets and discover stories like the origin of the phrase “a penny for your thoughts,” the rare penny that’s worth $2.4 million, and an English trend of chopping pennies in half. Plus: The real reason why you shouldn’t swallow a penny from 1982. (Actually, just don’t swallow any pennies ever, please.)

Will you miss the penny if it’s taken out of circulation? Tell us on Instagram @parttimegenius! 

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