Yeah this here's a good post by j cranberry. At the end of the day, humans and animals are both part of a cycle of nutrient use and recycling those nutrients f

Yeah this here's a good post by j cranberry. At the end of the day, humans and animals are both part of a cycle of nutrient use and recycling those nutrients from waste, be that human waste or animal waste, is a way to cut down on synthetic fertilizer use. Some bits from the USA [0] [1] [2] that y'all might find informative. Important part is that manure comes in different varieties and it's not all a 1:1 replacement for synthetics in the way farmers use them today. Also of note is that, just like in Germany, parts of the USA that concentrate livestock have too much bull shit and that's bad for runoff from the livestock operations. But that's the expected result, ain't it? Concentrating feed from fields all over means you're concentrating what comes out of the animal also, which means you need to truck it off somewhere or end up with a local pollution problem. One other upside of pursuing human waste streams is that we already have a lot of infrastructure in place to process human sewage. Have a look at [3] right here and you'll see the potential— but that's still less than half the phosphorous that Europe uses in the present day. Good news is that cutting back on fertilizer input doesn't result in a 1:1 linear reduction in cereal yields so a reduction in fertilizer availability (after the phosphates get mined out) doesn't necessarily lead to a bad famine. These are complex systems here and there's no one-size-to-fit-them-all type solution. [0] https://www.ers.usda.gov/webdocs/publications/42731/16741_ap037b_1_.pdf https://www.ers.usda.gov/webdocs/publications/42731/16741_ap... [1] https://www.ers.usda.gov/webdocs/publications/42731/16744_ap037e_1_.pdf https://www.ers.usda.gov/webdocs/publications/42731/16744_ap... [2] https://www.epa.gov/sites/production/files/2015-07/documents/2006_8_25_msbasin_symposia_ia_session8.pdf https://www.epa.gov/sites/production/files/2015-07/documents... [3] https://www.nweurope.eu/projects/project-search/phos4you-phosphorus-recovery-from-waste-water-for-your-life/ https://www.nweurope.eu/projects/project-search/phos4you-pho...