• DarthFrodo@lemmy.world
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      2 months ago

      The issue with using byproducts as animal fodder is that ruminants produce a lot of methane while digesting them. This enteric fermentation in their stomachs accounts for around 6% of global greenhouse gas emissions, while the entire aviation industry sits at just 2-3%. If we give them more food that is harder to digest, they’ll emit even more methane per animal.

      Biofuels make a lot of sense though. After extracting the fuel, the remaining digestate can be used to produce biochar or be put directly on fields as fertilizer, which is nice because synthetic fertilizers account for 1-2% of greenhouse gas emissions.

      Another option is to burn the byproducts for heat or electricity in winter during short periods when there’s not enough wind and solar power to cover energy demand.

  • AVincentInSpace@pawb.social
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    2 months ago

    I do tire of explaining to vegans that differences in soil quality mean that crops fit for human consumption cannot be grown everywhere and that making the best use of the land available often involves turning it into food via an intermediary