rich earth ’s chorus to donate their urine ?
but scientists now believe they can turn human urine into liquid gold — as composting material .
in collecting human urine , rich earth is diverting the view photo .
urine contains nitrogen , phosphorus and potassium — essential plant nutrients that are usually mined from the earth or the air for agricultural use .
of course , commercial fertilizers can harm the environment if they get into lakes and streams .
the scientists concluded not only that urine could replace quick - acting mineral fertilizers , but also calculated that one northern european adult pees enough plant people have been using manure as fertilizer for millennia .
 
urine contains nitrogen , phosphorus and potassium — essential plant nutrients that are usually mined from the earth or the air for agricultural use .
unlike commercial fertilizers , urine is free and abundantly available .