Dr. Donald Rapp is author of two new books, “Human Missions To Mars” plus "Assessing Climate Change: Temperatures, Solar Radiation, and Heat Balance." Dr. Donald Rapp has 48 years of post-doctoral experience. He is a true generalist. I am 50% scientist and 50% engineer. He has worked on an extremely wide variety of technical problems over the years and has wide knowledge of things technical. Dr. Rapp has a solid grounding in chemistry and physics and did fundamental work in these sciences for many years. In the second half of his career he worked on more applied problems, particularly in space technology and space mission design. He is an expert in requirements, architectures and transportation systems for space missions, with particular emphasis on impact of in situ resource utilization, and water resources. He has surveyed the wide field of global climate change and is familiar with the entire literature of climatology. Dr. Rapp is known far and wide in the NASA community as for my abilities to plan, organize and lead studies of broad technical systems. My services have been often sought in writing and reviewing major proposals for space ventures. His education includes B.S. Chemical Engineering, Cooper Union, 1955, M.S. Chemical Engineering, Princeton, 1956, Graduate study, California Institute of Technology, 1957, Ph.D. Chemical Physics, University of California (Berkeley) - January, 1960. From 2005-2008, Dr. Rapp has been at JPL as a Consultant through Skillstorm, Inc.