Krulwich Wonders... NPR Science Correspondent Robert Krulwich demystifies dense and difficult science.

Krulwich Wonders

Robert Krulwich On Science
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Friendly Company: The vuvuzela's characteristic buzzing sound hits the register at a B-flat, the same note that emanates from a supermassive black hole. Rajesh Jantilal/AFP/Getty Images hide caption

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Rajesh Jantilal/AFP/Getty Images