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Front Matter (R1-R12)

Executive Summary (1-4)

1. Introduction (5-8)

2. Interior and Crustal Structure and Activity (9-17)

3. Geochemistry and Petrology (18-25)

4. Stratigraphy and Chronology (26-33)

5. Surface Processes and Geomorphology (34-47)

6. Ground Ice, Groundwater, and Hydrology (48-53)

7. Life, Fossils, and Reduced Carbon (54-63)

8. Lower Atmosphere and Meteorology (64-70)

9. Climate Change (71-76)

10. Upper Atmosphere, Ionosphere, and Solar Wind Interactions (77-82)

11. Rationale for Sample Return (83-88)

12. Assessment of the Mars Exploration Program (89-104)

13. Conclusions (105-106)

Appendix A: The NASA Mars Exploration Program (107-117)

Appendix B: Compilation of Recommendations Concerning Mars Exploration Made by COMPLEX and Other Advisory Groups (118-130)

Appendix C: Acronyms (131-132)