• Catoblepas@lemmy.blahaj.zone
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    21 days ago

    They actually used to do this for real with bird guano, it was a vital part of industrial farming before they figured out how to make ammonia in a lab. There was even a war over it!

    Bat guano was also used to a lesser extent, and Confederates used it during Civil War blockades to manufacture gunpowder.

    This has been your irregularly scheduled and unasked for info dump. ✨🌈