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Service to KNAG 90.3 Grand Canyon is restored. Thank you for your patience and support.

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.
Since he joined NPR in 2000, Knox has covered a broad range of issues and events in public health, medicine, and science. His reports can be heard on NPR's Morning Edition, All Things Considered, Weekend Edition, Talk of the Nation, and newscasts.