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:
“It is the mark of a mean, vulgar and ignoble spirit to dwell on the thought of food before meal times or worse to dwell on it afterwards, to discuss it and wallow in the remembered pleasures of every mouthful. Those whose minds dwell before dinner on the spit, and after on the dishes, are fit only to be scullions.”
—Francis De Sales, Saint (1567–1622)
“Now John wore clothing of camel’s hair with a leather belt around his waist, and his food was locusts and wild honey.”
—Bible: New Testament, Matthew 3:4.
“To say that a work of art is good, but incomprehensible to the majority of men, is the same as saying of some kind of food that it is very good but that most people can’t eat it.”
—Leo Tolstoy (1828–1910)