• Rob Bos@lemmy.ca
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    8 hours ago

    The point is that it’s a passive process, not an active one. No need for pumping.

    Water is so much denser than air that you do get more exposure time per unit time.

  • fckreddit@lemmy.ml
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    1 day ago

    Carbon sequestration is not going to solve global warming. CO2 is less than 2% of atmosphere. Even if you pass a shitton of air through the strata the difference will be negligible.

    • Rob Bos@lemmy.ca
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      1 day ago

      Water absorbs a lot of co2 and removing it from the water via weathering is a valid idea.

      • fckreddit@lemmy.ml
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        1 day ago

        I don’t know. What do you think is the concentration of CO2 in the sea water? I am just not convinced.

        • Rob Bos@lemmy.ca
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          1 day ago

          The concentration isn’t as important as the difficulty to remove it. It’s still a hard problem, but rock weathering is one way to accomplish it, but it would need a lot of exposed rock surface.

        • piccolo@sh.itjust.works
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          1 day ago

          The biggest threat of co2 emmisions is ocean acidifcation. A collapse of the ocean ecosystem would be devastating to the rest of the planet. A warmer planet sucks, but dead phytoplankton would result in a global plumment in O2 production.

  • peoplebeproblems@midwest.social
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    2 days ago

    I think y’all are missing the point here.

    It’s really to justify the production and testing of an insanely large planet altering weapon that would create a really cool firework.

  • Hikermick@lemmy.world
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    2 days ago

    Just spitballing here. These grand ideas good/bad practical/or not are the beginning of mankind learning how to geo engineer planets or moons. I’ll be long dead before I get proven right or wrong so it’s easy to spitball

  • mindbleach@sh.itjust.works
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    2 days ago

    I’m pulling for artificial diamonds. It’s the funniest solution: dumping truckloads of precious gemstones back down empty wells. Or burying them in the desert. Or I guess just handing them out for industrial uses, since even grinding them to dust isn’t the same problem as CO2. Have a free bucket of aquarium gravel, made out of worthless tacky gold.

    • Tar_Alcaran@sh.itjust.works
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      2 days ago

      Hey, if you can make diamond that easily, we can exchange a LOT of substances for it. Not just windows and glasses, but pretty much every ceramic object, insulators, but also just toilets (slap some paint on it and done).

  • gravitas_deficiency@sh.itjust.works
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    2 days ago

    I mean… if we’re being honest, the long-term effects of global thermonuclear war would be (very eventual) carbon sequestration in tens to hundreds of millions of years, and then we’ll renew our oil reserves! We of course won’t be around to use them, seeing as we’ll have been sequestered into the oil.

    • Eheran@lemmy.world
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      2 days ago

      Can we get new oil actually? I thought we now have organisms that can break down every organic matter and thus it can not really accumulate anymore?

      • frezik@midwest.social
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        1 day ago

        There’s an abiotic pathway that creates new oil geologically. It’s a very small amount.

        The theory is popular in Russia, where it’s claimed to be the main way oil is produced. That’s complete bullshit. It turned out there is some, but not enough to matter.

      • Tar_Alcaran@sh.itjust.works
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        2 days ago

        Oil actually comes from aquatic life (mostly plankton) that sinks to the sea floor and gets buried, squeezed and heated. Oil still forms today, but it’s a process of millions of years.

        Coal is formed from plants, and that does indeed require something doesn’t eat it first. Swamps, for example, help a lot, letting the fallen trees sink down where most stuff can’t eat it. Peat can also form into coal. Coal forms even slower than oil though, and it’s much rarer, but it also doesn’t require an ocean, so it’s often more accessible for us land-living humans

        • Eheran@lemmy.world
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          2 days ago

          Coal is much rarer than oil? I have to look that up, I always thought there is far more coal.

          Nope, there is about 3x more coal than oil.

          • frezik@midwest.social
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            1 day ago

            IIRC, all that coal comes from plant material from before there were microbes that can break down cellulose. Meaning that while it’s possible to regenerate oil over millions of years, coal cannot.

            So yes, there may be more of it now, but when we burn it, it’s gone forever.

      • FoolishObserver@lemmy.world
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        2 days ago

        No: this was about how the US Government considered underground nuking Alaska for the coal, killing cattle to check for cancer, and having people believe it was aliens. I was at work, so I may have missed a few points, but there was a discussion on power via turbine powered by nuclear weapon melted salt.

        Re-naming all the Great Lakes to Lake America (with the easy to remember acronym “AAAAA!”) was one of the late night shows.

  • brucethemoose@lemmy.world
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    2 days ago

    This is by far the most practical “geoengineering” solution I’ve seen, far better than aerosols over the arctic, space shades or whatever. The ecological damage is comparatively miniscules.

    And even then… quite a engineering feat. Nukes are actually “cheap” to scale up (a small bomb can catalyze big, cheap cores), but burying that much volume “3-5 km into the basalt-rich seafloor” is not something anyone is set-up to do.

    But by far the hardest part is… information. Much of the world doesn’t even believe in climate change anymore, and by the time they do, it will be too late.

  • shittydwarf@lemmy.dbzer0.com
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    2 days ago

    The last time I checked, we don’t have a whole lot of climate solutions that feature the bomb. And I’d be doing myself a disservice… and every member of this species, if I didn’t nuke the HELL out of this!