Although it's an integral part of many people's lives today, the smartphone is bound to be replaced by the next big thing. We explore what (and when) that might be in this classic episode of BrainStuff.
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BrainStuff Classics: Why Are Some Americans Cancelling Columbus Day?
07:16

American Versus British English: What Are Biscuits, Muffins, and Pudding?
09:51

How Do Sunspots Work?
14:22