Edit: I meant specifically humans.

  • Astroturfed@lemmy.world
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    1 year ago

    Prominence of lactose tolerance maybe? Most animals are lactose intolerant and countries that produced a lot of dairy, the people became tolerant of it.

    • scarabic@lemmy.world
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      1 year ago

      This makes a lot of sense. Animals turn grass into milk. Think what an advantage it is to be able to drink it. Suddenly you can live on grass. I’m sure in lean times this could easily make a life or death difference.