Conversations host Harry Kreisler welcomes Cornell's Steven Squyres for a discussion of the Mars Exploration Rover Mission. Reflecting on the intellectual journey that led to his role in the Mars mission, Squires reminisces about his early years, his education and his career in geology and astronomy. Discussing the role of leadership in a complex scientific project, he compares the characteristics, skill set, and work of scientists and engineers, and he describes the dynamic process that led to the project's success in exploring Mars. He explains the importance of the mission and what was learned and concludes with thoughts on the future of planetary exploration. (#22444)