Like most western states, mineral rights in Colorado are split off from property rights. So one person can own the surface rights to a piece of land, while someone else owns what’s underground. That model was also used when oil and gas drilling began in the state. So now that Colorado has become one of the leading states in the nation in producing wind power, the question has come up about whether the rights to wind can be separated. A bill in the Legislature would stop that from happening. K.K. DuVivier, professor with the University of Denver Strum College of Law, testified at a legislative hearing in favor of the bill. She talks with CPR's Ryan Warner.