Question: The Mars Society is an American worldwide volunteer-driven space-advocacy non-profit organization, inspired by "The Case for Mars" conferences which were hosted by The Mars Underground at the University of Colorado Boulder, a public research university located in Boulder, Colorado, in which country?
Sentence (from "Mars Society"): Inspired by "The Case for Mars" conferences which were hosted by The Mars Underground at the University of Colorado Boulder, the Mars Society was established by Dr. Robert Zubrin and others in 1998 with the goal of educating the public, the media and government on the benefits of exploring Mars, the importance of planning for a humans-to-Mars mission in the coming decades and the need to create a permanent human presence on the Red Planet.
Relevant evidence: Yes