Food
Life support systems could include a plant cultivation system which allows food to be grown within buildings and/or vessels. However, no such system has flown in space as yet. Such a system could be designed so that it reuses most (otherwise lost) nutrients. This is done, for example, by composting toilets which reintegrate waste material (excrement) back into the system, allowing the nutrients to be taken up by the food crops. The food coming from the crops is then consumed again by the system's users and the cycle continues.
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Famous quotes containing the word food:
“Architecture might be more sportive and varied if every man built his own house, but it would not be the art and science that we have made it; and while every woman prepares food for her own family, cooking can never rise beyond the level of the amateur’s work.”
—Charlotte Perkins Gilman (1860–1935)
“For much of the female half of the world, food is the first signal of our inferiority. It lets us know that our own families may consider female bodies to be less deserving, less needy, less valuable.”
—Gloria Steinem (b. 1934)
“Too much food spoils the appetite, and too much talk becomes worthless.”
—Chinese proverb.