Uhh aliens would be inevitably universally omnicidal just in case some other aliens are omnicidal, shut up nerd

    • happybadger [he/him]
      ·
      edit-2
      2 years ago

      You'd also have geological strata of artificial particles like concrete/asphalt/polymers and ice core records of air pollutants.

        • happybadger [he/him]
          ·
          2 years ago

          Are the caps bound to totally melt or just the surface ice and glaciers? Permafrost is dummy thicc.

          • sooper_dooper_roofer [none/use name]
            ·
            edit-2
            2 years ago

            Antarctica used to have palm trees at one point in history.

            It's possible that it was closer to the equator during this time, I haven't figured out where exactly its position would be. It's also possible that as you said, there was some ice in some spots. But being that

            1. the effects of ALREADY PRESENT CO2 haven't even manifested yet
            2. we are still adding more CO2 on top of that
            3. the amount of CO2 we're adding is increasing

            I feel like it's safer to say that Antarctica will eventually be almost ice-free.

            • happybadger [he/him]
              ·
              2 years ago

              Well that sucks. I was planning on moving there and becoming a desperate cannibal warlord.

    • culpritus [any]
      ·
      2 years ago

      distinctive isotopic signature

      the isotopes from nuclear testing has already been raised by geologists as the 'golden spike' of the anthropocene, I'm sure an interstellar species would be able to notice it already if they cared to look