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.)

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Today marks the 113th anniversary of the Titanic's sinking, so we're bringing back this classic episode! For some reason our hearts keep going on and on for the Titanic. But what was life actually like on the ship? Why were there so many electric horses on board? How bad did third class passengers have it? And did Hollywood really produce a silent movie about the disaster just two weeks after it occurred? Will and Mango investigate.

Sorry, we know the song's stuck in your head now. Tell us about it on Instagram @parttimegenius!

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Dr Pepper's flavor is just one of many questions we have about the drink. Who is the doctor behind Dr Pepper? Is tomato one of the soda's 23 secret ingredients? Should you actually be drinking your Dr Pepper hot? And why doesn't Dr Pepper have a period in its name? (Does the good doctor think it's above the laws of grammar?!) Also, what did Dr Pepper do to make Guns 'n Roses so angry? Will and Mango have a lot of questions... and at least 9 answers for you.

What's your favorite soda (or do you call it pop)? Tell us about it on our Instagram @parttimegenius!

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