Kids ask, "Why?" all the time. Why does 1+1=2? Why do we memorize multiplication tables? Many of us eventually stop asking these questions. But mathematician Dr. Eugenia Cheng says they're key to uncovering the beauty behind math. So today, we celebrate endless curiosity and creativity — the driving forces of mathematicians. Regina G. Barber and Eugenia talk imaginary numbers, how to go beyond simply right and wrong and yes, Eugenia answers the question, "Is math real?"

Eugenia's new book Is Math Real? is out now.

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