Dr. PAUL D. SPUDIS is a Senior Staff Scientist at the Lunar and Planetary Institute in Houston, Texas. His research focuses on impact and volcanic processes on the planets and requirements for sustainable human presence on the Moon. He was Deputy Leader of the Science Team for the Clementine mission to the Moon in 1994, the Principal Investigator of the Mini-SAR radar experiment on India’s Chandrayaan-1 mission in 2008-2009, and a team member of the Mini-RF radar on NASA’s Lunar Reconnaissance Orbiter mission (2009-present). He was a member of two White House commissions on U. S. Space Policy. He is the author or co-author of over 100 scientific papers and seven books, including The Clementine Atlas of the Moon and the forthcoming The Value of the Moon: How to Explore, Live and Prosper in Space Using the Moon's Resources. His website is www.spudislunarresources.com.