title: Newsmaker interview: John Grunsfeld. NASA's spacefaring science chief sets a new course for Mars. Interview by Yudhijit Bhattacharjee.
authors.forename: John
authors.initials: J
authors.lastname: Grunsfeld
mesh_terms: D006801:Humans; D018535:Mars; D013026:Space Flight / Q000191:economics* / Q000639:trends*; D014481:United States; D018557:United States National Aeronautics and Space Administration / Q000191:economics*