One of the most triumphant moments in the book and recent movie The Martian comes when lead character, Mark Watney, successfully grows a potato crop on Mars. It’s more than food for survival; he’s also nourishing his spirit.  In space, there is no scent of baking bread, no wind on your face, no sound of raindrops hitting the roof, no favorite kitten to curl up in your lap. Over time, being deprived of these common earthbound sense stimulations takes a toll. Having limited access to stimuli to the senses is identified as a significant risk by NASA’sBehavioral Health and Performance team.