Why Is the Sky Blue? It's not the explanation that our guest Will Pierson gave us on the program last week. For the real answer, we turn to NPR's Joe Palca (with a little help from Irving Berlin).
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Why Is the Sky Blue?

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Why Is the Sky Blue?

Why Is the Sky Blue?

Why Is the Sky Blue?

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It's not the explanation that our guest Will Pierson gave us on the program last week. For the real answer, we turn to NPR's Joe Palca (with a little help from Irving Berlin).