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.
Read more about this topic: Life Support System
Famous quotes containing the word food:
“The food of thy soul is light and space; feed it then on light and space. But the food of thy body is champagne and oysters; feed it then on champagne and oysters; and so shall it merit a joyful resurrection, if there is any to be.”
—Herman Melville (1819–1891)
“... the more we recruit from immigrants who bring no personal traditions with them, the more America is going to ignore the things of the spirit. No one whose consuming desire is either for food or for motor-cars is going to care about culture, or even know what it is.”
—Katharine Fullerton Gerould (1879–1944)
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—Jean François Lyotard (b. 1924)