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Cake day: July 20th, 2023

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  • The stuff that is heavier than water ends up in the river delta, everything else dilutes into the ocean. Once it’s in the ocean, there’s not much humans can do about it. Promoting populations of sea grass and filter feeders like mussels can at least capture pollution in a form that settles to the seabed and improves water quality.

    There will be pockets of pollution that persist for a long time, and floodwaters could stir some of that back up, but the above poster is correct. Cleaning up a river can be as simple as stopping the sources of the pollution. A dirty river is dirty because stuff keeps getting added to it. Of course stopping sources of pollution is way easier said than done.


  • I don’t like this system for two reasons.

    The first being that bookshelves should have a restraint system that attaches to the walls. You could probably improvise something, but the video lacks that element.

    The second is that the alternating brick pattern is weak for an open faced box. That puts a significant portion of the weight of higher courses on the middle of the span of lower courses. You can see some of the lower levels bowing signicantly. Since the back is rigid, but the front can flex, that will increase the tendency to tilt into the room and makes the tipping hazard worse. Add in an old floor that is concave and you have a significant hazard.

    I like the concept, but this needs some changes before it is safe.




  • The beehives have a huge prerequisite of making sure there’s enough flowers throughout the year to feed them. So if they come with installing a full rooftop garden, that’s great, otherwise you’d be better off sticking to the panels.

    But putting up panels wouldn’t prevent you from also starting container gardening. Pollinating insects are pretty good at making their own homes. What matters more is growing food for them and their larval stages to eat. So if you’re up for it, install the panels, and start filling the gaps with container plants. Just don’t go overboard because soil is too heavy for roofs that aren’t designed for the extra load.







  • The wording isn’t exactly clear, but it doesn’t say what you think it does. Alaska approved ranked choice voting and open primaries in 2020. Leman was part of Yes on 2 which was an effort to repeal RCV and go back to closed primaries. Outside groups helped fund the opposition campaign to say no to the repeal. The group trying to enact the repeal raised very little funding. So what he said isn’t contradicted by the numbers presented.

    I’m dissapointed that there seems to be so much impetus to go back to first past the post in Alaska. That might slow down efforts elsewhere in pushing for RCV.


  • I’m not a meteorologist, but I do know a thing or two about plasma.

    Plasma is very short lived. Think on the order of microseconds at atmospheric pressures. So unless there was a massive linear source of power along the whole length, this isn’t plasma.

    The visual effects probably have to do with the fact that the sun was very low. I’m guessing the particle size distribution in that line is notably different from the size of particles in the clouds surrounding it, leading to much stronger reflection of evening light.

    I am curious as to the meteoroligical explanation for the line though.





  • I definitely agree with you, however, I think needing to become self sustaining on earth is a goal that would be well served by trying to design a self sufficient system for mars.

    Earth is big enough that it’s really easy to forget we’re all in the same fish bowl. Entire cities can flush their shit down the river and as far as they are concerned, nothing bad ever happens to them. The scale of earth makes us blind to the problems our actions and methods cause. The ecosystems also do quite a bit to protect us from our own actions

    You can’t ignore externalities in a space colony. Everything must be accounted for. That is what makes it so difficult to design for. Any small amount of waste will still accumulate over time and eventually becomes a problem.

    The tighter scope and strict requirements of a space colony would make it easier to actually objectively measure how sustainable it is. You would know exactly how much external inputs you are delivering each year. We can then take the lessons and technologies that are absolutely required in a space settlement and use them to inform how to better be sustainable on earth. For example, solar cells used to only really be used on satellites, not because they were great on satellites, but because they were pretty much the only option that could stay operational for years. Now PV power generation is helping countries all over the world become a little more sustainable. The harsh requirements of space make us better at problem solving.

    I totally agree that earth is our only option for species survival though. Anyone selling Mars as a “backup” for humanity is either delusional or a con man. I think developing the capability to keep a settlement on Mars is a worthwhile endeavor, but there is no way for humanity to thrive there. Any large scale catastrophe on earth will still be more survivable in select pockets on earth than anywhere on Mars.


  • Fermion@feddit.nltoAsklemmy@lemmy.mlAm I insane?
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    9 months ago

    Do you want some discouragement?

    Stainless steel is stains less not rusts never. You would need additional measures to keep the stand from degrading over thousands of years. Your local archeology department could give you some pointers on how to accomplish that.

    Or maybe you design the stand in such a way that the tungsten object is held firmly, but still easily visible in rusty stainless jaws.