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:
“Would mankind be but contented without the continual use of that little but significant pronoun “mine” or “my own,” with what luxurious delight might they revel in the property of others!... But if envy makes me sicken at the sight of everything that is excellent out of my own possession, then will the sweetest food be sharp as vinegar, and every beauty will in my depraved eyes appear as deformity.”
—Sarah Fielding (1710–1768)
“Food probably has a very great influence on the condition of men. Wine exercises a more visible influence, food does it more slowly but perhaps just as surely. Who knows if a well-prepared soup was not responsible for the pneumatic pump or a poor one for a war?”
—G.C. (Georg Christoph)
“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)