More people around the world are warming to the idea of geothermal energy in the race to help keep our planet cool. If harnessed with care, the vast amount of heat below our feet is clean, stable and virtually inexhaustible. In this episode of Zeroing In, we visit a Japanese community where the locals make full use of the steam rising from below, while our partners at Northern California Public Media cover a pioneering geothermal project in which wastewater becomes a real environmental asset. Host: Catherine Kobayashi Guest: Greg Dalton, Journalist and Host, "Climate One"