Due to CalFire work at our primary transmission site, we will be experiencing periodic outages lasting approx. 30 minutes on various days of the week. We apologize for the inconvenience.
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.