By Keith Staskiewicz
Updated August 04, 2010 at 04:00 AM EDT

In Packing for Mars, this truly funny look at the less majestic aspects of the space program, Mary Roach shows that every activity we take for granted on Earth requires months of training for astronauts. How do you avoid motion sickness? How do you withstand weeks of enclosed body odor? Then there?s the No. 1 issue: No. 2, or, as NASA calls it, ”zero-gravity elimination.” Roach?s writing is supremely accessible, but there?s never a moment when you aren?t aware of how much research she?s done into unexplored reaches of space travel. A?

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