228: Lock and Key

C'mon, let's head down to the trivia vault filled with facts about security, protection, and secrets! Fort Knox has been called the most secure vault on planet Earth but what actually goes on at Fort Knox? Nowadays, we don't leave the house without our "wallet, keys, phone" but did you know people in the 1800s wouldn't leave the house without their chatelaines? Take Karen's famous secret recipe quiz and learn about how food companies protect and lock up their delicious secret formulas. Why is a vault called a vault? And are skeleton keys made of bone?

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