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Arizona Public Radio continues to integrate new audio software while addressing remaining glitches. We appreciate your patience and support and will update when all issues are fully resolved.
David Kestenbaum is a correspondent for NPR, covering science, energy issues and, most recently, the global economy for NPR's multimedia project Planet Money. David has been a science correspondent for NPR since 1999. He came to journalism the usual way — by getting a Ph.D. in physics first.