LK-99

Aug. 11th, 2023 10:46 am
citrakayah: (cutthecrap)
It looks like it isn't a room-temperature superconductor after all. Not just that, but it's not even highly conductive. Normally I'm skeptical of new technologies until they're proven to be effective, but the apparent positive response from a lot of people had me cautiously optimistic. It's kind of ironic that the one time I'm a bit of a techno-optimist, the technology in question doesn't pan out.

Anyway, I'd initially heard that the results might help design superconductors even if this didn't pan out, but if it's as horrible as it sounds I don't see how it would.
citrakayah: (cutthecrap)
So, I read this article a few days ago.

I have to be honest, I have mixed feelings about research like this.

It's not because it's wrong. I mean, it is to some extent; one of the authors of the study pointed out that they know the dataset has issues, but that's going to be true of pretty much any dataset that tries to cover something like human activity for the entire planet over 12,000 years. But none of that is going to affect the conclusions of the paper that much; they're right to say that the vast majority of the planet has had some degree of human presence (and, accordingly, some degree of human influence) for quite some time. And it's good to point that out, and indigenous groups and ecologists do need to collaborate more.

No, the problem is that any 100 square kilometer area with a population greater than literally zero (even if it's fractional) is given the label "cultivated," a label which extends to (but not including) 20% cover with intensive land use.

This is fine for the point they're trying to make, but on the fine scale, there are lots of places that are large blocks of uncontrolled nature which wouldn't show up on their map. For instance, Acadia National Park doesn't have a single block of 100 square kilometers with no human presence. It's still got old-growth forest, though, and the presence of humans near it does not necessarily mean that the ecology of Acadia National Park is "cultivated." That's determined by the extent to which the ecology of the region is under active control of humans, and as far as I know, it, by and large, is not.

Acadia has the usual effects of air pollution, wildlife road death, et cetera from being near humans, and the release of invasive species and attempts to control them (presumably). But it is not a garden. It is not being manipulated for the self-interest of humans. People call it "wild" even if humans had some impact on it.

Now, you might fairly ask, "Citrakayah, why the fuck do you even care about this definitional quibbling?"

I care because in the modern era, the impact of a scientific paper is not only determined by what's actually in it, but what people will say when summarizing it as a 280 character viral Twitter post. Everything gets dumbed down, and the nuance gets stripped out of it. This is bad enough when it's arguing about whether Picard was better than Kirk. It's worse when it can result in one of the fundamental justifications behind not ruining large parts of land gets stripped away.

And this really does happen. I've seen people say that certain ecosystems were mostly the result of human influence when all that's been demonstrated was that they had some amount of human influence, and I've see headlines that blare "IS THE AMAZON MAN-MADE?" (no; it predated human habitation). The difference between "humans had some impact on the ecosystem" and "humans had control over the ecosystem" tends to get ignored.

I've seen other people argue that the wild simply doesn't exist anymore, and humans should just actively manage the entire planet.

It's all too easy, whenever I see this subject pop up in the media, to see how it can get twisted into an excuse to justify the total exertion of human control. And I think that if humans do exert that sort of control, something important, if insubstantial, will be lost. And it will be followed by the loss of a great many concrete things.

This may be overly alarmist of me, and I hope it is. But it's a fear I just can't shake.
citrakayah: (Default)
Well, this is impressive: https://www.sciencemag.org/news/2021/03/sea-slug-cut-its-own-head-and-lived-tell-tale

Decapitating yourself in order to get rid of parasites; that's a new one.

There's a video, which is pretty hilarious and I recommend everyone watch.
citrakayah: (Default)
This week's Science is a special issue literally titled "A World of Mud." It is full of news reports about mud and I find this immensely entertaining. Unfortunately I can't just link the stories.

There was a story about the bacteria (in mud) that make these structures, which I found interesting because they are very long for what are cables of single cells. They are also conductive--I don't think this will be of that much use technologically, but it may be useful and is certainly curious--and ensure the health of marine ecosystems by limiting phosphorus.

There was also an article on this project. Reading about it has reshaped the way I think about streams. It's cool to see how the wetland has started to regenerate, and to think of the degree to which it could reduce eutrophication.

They also had some articles on how mine tailing dams break and release toxic mud everywhere, and about how the red mud from mining aluminum is dangerous, but I figure most people reading this know that.
citrakayah: (determined)
For several years, I've been following a case in India regarding the reintroduction of cheetahs. In brief, it was proposed to reintroduce cheetahs to the Indian subcontinent, where they historically existed. However, there were arguments over whether or not the African cheetah subspecies were too different from the Asiatic cheetah to use the African cheetah in the introduce program. It's basically the age old splitting versus lumping debate in taxonomy.

Unfortunately, there are only about 50 Asiatic cheetahs left; the subspecies is critically endangered. Insisting upon the reintroduction of the Asiatic cheetah is practically the same as insisting upon no reintroduction at all, and to the best of my knowledge the practical differences (in other words, the ones that would affect their role in the ecosystem) between the two subspecies are rather speculative.

So the plan got put on hold by the Indian Supreme Court back in 2012. Why they were the ones doing it I honestly could not tell you; I care more about where the project is than I do about fine political details I really can't affect.

But last month the Court gave it's approval, so the project is--currently--a go.
citrakayah: (Default)
Been a while since I posted anything that was completely public, but I thought I'd share a scientific paper about a shipworm that burrows through and ingests rock.

It doesn't appear to derive nutrition from the rock, either directly or indirectly, but it's the only known invertebrate to do this, and there's still a possibility that symbiotic bacteria could feed on the rock and then contribute to the worm. Morphological adaptations are pretty neat, too.

So it's cool.
citrakayah: (determined)
I'm doing well in my internship. When I started, I was worried I wasn't going to be able to keep up with the other interns, which quickly turned out not to be the case. According to the senior intern, I'm pretty fast, though that may be as much due to other interns not focusing on their work as it is due to any natural skill I have.

Regardless, while I'm enjoying it a lot, I'm having to find another position soon; the internship lasts for the spring and I want to work over the summer. So far, I've applied to a few positions, mostly things in the Southwest. I've always wanted to live there, and it's actually warm down there. There are a surprising number of carnivore technician positions, but few in the area I'd like to live in--but it's seasonal work, so I'll be moving around anyway.

I did get a phone call back from a position in Massachusetts, so I may be moving up there. It's near Boston, which is nice. During the summer it should be nice and warm, and I can collect beach glass and visit my brother, who has gone to school at Brandeis.

I'm also considering volunteer work. There are a few positions that technically don't pay anything, but give you free room and board. You aren't ending up with money, but you aren't worse off and you get stuff out of it. One of the ones that's caught my eye would be in the South Pacific, on Johnston Atoll.


Personally, I'm okay. The weather doesn't suit me well, but I'm dealing, and I'm not too depressed.


Also, the dead raccoon, from earlier? I called it in two months ago and it is still there.
citrakayah: (Default)
Summer is going well so far; I actually have work experience now. Currently I'm not being paid because the university has no money because Certain Individuals Who Shall Not Be Named defunded Illinois (university budget is getting slashed by 40%, IIRC). Everyone's pretty pissed about it.

My internship itself is pretty awesome. Right now we're doing an experiment to determine how heavy metal pollutants affect fish larva survival if nighttime cooling is eliminated. The fact that some of the fish die is pretty horribe, but the survivors are released after their most vunerable stage and I'm hopeful the data will be of use to bluegill populations.

There have been a couple BLM demonstrations recently, and there's one scheduled for tonight. At one of them some asshole tried to run a protestor over and carried them a good few hundred feet before stopping. That particular asshole currently has a smelly car and got punched.

I'm going to the one tonight.

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Citrakāyaḥ

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