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:
“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.
“Feed him ye must, whose food fills you.
And that this pleasure is like raine,
Not sent ye for to drowne your paine,
But for to make it spring againe.”
—Robert Herrick (1591–1674)
“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)