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Olduvai III: Catacylsm
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Why human waste should be used for fertilizer

Why human waste should be used for fertilizer [ At John Jeavons Biointensive workshop back in 2003, I learned that phosphorous is limited and mostly being lost to oceans and other waterways after exiting sewage treatment plants.  He said that it’s dangerous if done incorrectly and wasn’t going to cover this at the workshop, but to keep […]

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Human manure: Closing the nutrient loop

Human manure: Closing the nutrient loop Using human urine and faeces as fertiliser may seem an unappetising concept but it’s been common practice for centuries. In the sewage systems of today, which deal with millions of tonnes of domestic waste and industrial effluent, this human fertiliser comes in the form of treatedsewage sludge. Promoting a […]

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Olduvai IV: Courage
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Olduvai II: Exodus
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