Guest: Mary Roach. Topics: Mars, space medicine, microgravity, human spaceflight issues. We welcomed Mary Roach, author of "Packing For Mars: The Curious Science of Life in the Void." You can purchase this book from Amazon by using the One Giant Leap Foundation (OGLF) book page and Amazon then contributes to OGLF/The Space Show. Please use www.amazon.com/dp/0393068471?tag=onegialeafou-20. This program was specially formatted for one hour without a break. Ms.