He was at the helm of NHPR for fifteen years, during the station's difficult transition from music to news, during its mushrooming audience numbers, during many a fundraiser and during the evolution of new programming like the Front Porch and The Exchange. Mark Handley's last day at NHPR is Friday, when he'll take the helm of a new kind, sailing on a two year trip around-the-world. But before he departs we'll talk with him about his time at NHPR, the changes it's gone through and his thoughts on the future of public radio.