Research Professor Marie Jackson from the University of Utah's Geology Department talks about three locations in Utah that were just named to the list of the world's top geoheritage sites. Then, follow geothermal scientist Andrés Ruzo journeys to far-off lava fields, hidden boiling rivers, and through fiery portals to the Earth’s core. He previews his talk on Friday, Oct. 4 presented by Park City Performing Arts at the Eccles Theatre in Park City.