If it's small and more round, things aren't going to get caught on each other. But if they're like jagged and harsh, they could get caught in each other. The issue is when it gets even smaller, something like sugar or humidity can affect it. So knowing the individual grains isn't enough. It's about how they behave together.
Sam Sanders, host of Vulture’s Into It podcast, is in the hot seat for a new episode of our game show. Can he guess which sandy mystery has been solved and which ones are still unexplainable?
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