Gnawing Questions : The Salt Gnawing Questions

You're born with roughly 9,000 taste buds, and they're very good at regenerating — which is why you can recover the ability to taste just days after burning your tongue. But that changes as we age. CSA Images/Getty Images hide caption

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CSA Images/Getty Images

You may be tempted to save a piece of a moldy loaf by discarding the fuzzy bits. But food safety experts say molds penetrate deeper into the food than what's visible to us. And eating moldy food comes with health risks. Alex Reynolds/NPR hide caption

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Alex Reynolds/NPR