Comment on Death in SpaceparentComments−eru16yFertilizers can last forever. Matter is not actually used up.As long as we have enough energy, we can make fertilizers. Of course, petrochemicals are a nice raw material, but not necessary.And we are not running out of energy, anytime soon. (Though we may run out of oil.)−hnal94316yThe conservation of matter is an amazing thing.If you wish to make an apple pie from scratch, you must first invent the universe - Carl Sagan−eru16yYes. Though to be more precise, in the process of using fertilizers, even the atoms are conserved. Though you will have to re-build the molecules.On the practical side: Using coal as a raw material, you should be able to make fertilizers with only somewhat more energy than from oil.
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Fertilizers can last forever. Matter is not actually used up.
As long as we have enough energy, we can make fertilizers. Of course, petrochemicals are a nice raw material, but not necessary.
And we are not running out of energy, anytime soon. (Though we may run out of oil.)
The conservation of matter is an amazing thing.
If you wish to make an apple pie from scratch, you must first invent the universe - Carl Sagan
Yes. Though to be more precise, in the process of using fertilizers, even the atoms are conserved. Though you will have to re-build the molecules.
On the practical side: Using coal as a raw material, you should be able to make fertilizers with only somewhat more energy than from oil.