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A scientific fact/tidbit you recently learned that you thought was interesting

So every Friday night at my place during Uni we were actually doing science? :cool:
Note that it isn't just crushed ice. They shook the absolute bejesus out of ice and steel balls, and literally broke down the structure between molecules.

Pretty cool, IMO.
 
Understatement of the century. It's sheer luck beyond all belief that we exist, or even more primitive forms of life did before us. Like it makes winning the lotto look easy. When you learn about all the events that led up to us.......not just Earth being in the "Goldilocks Zone," but the numerous stages our planet has gone through which ultimately propelled life to new heights (including mass extinctions) on and on it goes.

And it's sheer luck that the hole is exactly the right shape for the puddle of water that sits in it. I mean, what are the odds of that, right? Every little crack and dimple had to be exactly right.

The universe is not how it is so that we can be as we are. We are as we are because the universe is as it is. Just ask the intelligent lifeforms on all the billions of lifeless worlds who weren't so lucky.
 
And related to that, the period of time during which total eclipses occur as they do now - with the moon exactly covering the sun, allowing the spectacular display of the corona and prominences - is a pretty small percentage of the earth's history (like you, I'm too lazy to look up the figures). It's sheer luck that we happened to evolve during the small window during which we can get treated to those displays.


They wouldn't have seen the corona and prominences as a ring around the sun, but it seems to me they'd have seen the corona and prominences along an edge of the eclipse toward the beginning and end of the eclipse, when the sun was just barely hidden on that edge. And I'd think that people near the margin of the path of total eclipse would have seen the corona and prominences for a longer time at 90 degrees to the edges I just mentioned.

But you're right, they wouldn't have seen a complete ring around the sun, which a lucky few of us will see in April.
 
Scientists Have Created a New Type of Ice

tl;dr they took a bunch of ice, shook the **** out of it, and destroyed its molecular structure.

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Mice can pass the mirror test, with caveats...

Researchers report December 5 in the journal Neuron that mice display behavior that resembles self-recognition when they see themselves in the mirror. When the researchers marked the foreheads of black-furred mice with a spot of white ink, the mice spent more time grooming their heads in front of the mirror—presumably to try and wash away the ink spot. However, the mice only showed this self-recognition-like behavior if they were already accustomed to mirrors, if they had socialized with other mice who looked like them, and if the ink spot was relatively large.

I've always been a little suspicious of the mirror test. But perhaps that's for another thread.
 
The trouble with bioluminescent plants is that you can't turn them off when you want to look at the night sky.
 
ACX is doing a round of effective altruism style funding of various endeavors, here's the post about the groups being funded this round.

Anyway, there were a couple of pretty interesting ideas in there, particularly the first of which seems applicable to this thread, at least if true:

Marcin Kowrygo, $50,000, for the Far Out Initiative. Recently a woman in Scotland was found to be incapable of experiencing any physical or psychological suffering*. Scientists sequenced her genome and found a rare mutation affecting the FAAH-OUT pseudogene, which regulates levels of pain-related neurotransmitters. Marcin and his team are working on pharmacologic and genetic interventions that can imitate her condition. If they succeed, they hope to promote them as painkillers, splice them into farm animals to produce cruelty-free meat, or just give them to everyone all the time and end all suffering in the world forever. They are extremely serious about this.

*There’s a long history of studying patients with various pain insensitivity syndromes. Many of them die after getting injuries that they don’t catch in time; for example, they might accidentally brush against a candle, light themselves on fire, and not notice until they look down and see the flames. Ms. Cameron is especially interesting because she’s in her seventies, very healthy, and by all accounts has lived a pretty normal life (she does report that she “often burns her arms on the oven”, but seems to catch it faster than people with other variants of her condition). I’ve seen some suggestion that she has something like pain asymbolia, where she still perceives pain but doesn’t find it unpleasant. Maybe she burns her arms because low levels of asymbolic pain aren’t attention-grabbing enough to immediately catch her attention if she’s distracted - but she manages to stay overall alive and healthy because higher levels of pain can grab her attention even without associated unpleasant qualia. This is the sort of thing Marcin’s team will be considering as they try to understand her condition better.

Blueprint Biosecurity, $25,000, to continue their research into germicidal far-UV-C - ie ultraviolet lightbulbs that kill airborne germs. If this worked, you could sit in a room with lots of people who had COVID and not get it yourself, because the lights would zap the virus before it could reach your nasal passages; in the best-case scenario, this is a fully general solution to all respiratory pandemics. Other teams have already established that the UV light kills germs, so the remaining challenge is to ensure it’s safe for humans. Jacob’s project addresses one of the remaining safety issues: UV creates ozone, which is good in the ozone layer but bad in breathable air. Blueprint plan to test various ozone scrubbers to see if they can remove the problem.

Duncan Purvis, $30,000, for work on improving flu vaccines. Previous vaccines have included four strains of flu, but one strain recently died out. The World Health Organization, which coordinates flu vaccines, is planning to downgrade to a three-strain vaccine. But Duncan thinks there’s room to improve resistance to future pandemics by reserving the extra slot in vaccines for potentially dangerous influenza A strains. He plans to attend conferences, publish papers, and otherwise build a coalition to make this happen.

It's worth noting that they have a venture capital style approach to giving. The important thing is to maximize expected value, which includes making bets on low-probability high-impact things. So take this stuff with a grain of salt. Still, interesting!
 
I only hope that the UV light does not give people sunburn or skin cancer. We are told that will happen when we stay in the sun because of UV light.
 
I only hope that the UV light does not give people sunburn or skin cancer. We are told that will happen when we stay in the sun because of UV light.

Yeah, that would be my first worry. I have a UV light machine that I use to disinfect a room, but you're supposed to be out of the room when its on, and it has a time delay: you turn it on, it starts beeping for ten seconds to warn you to get out of the room, and only then does it turn on.

I think the idea with this stuff though is that they're using a part of the UV spectrum that is safe for humans but still kills germs. Like, UV-C won't give you a sunburn, whereas UV-B would? But I don't know much about the details here.
 
Yeah, that would be my first worry. I have a UV light machine that I use to disinfect a room, but you're supposed to be out of the room when its on, and it has a time delay: you turn it on, it starts beeping for ten seconds to warn you to get out of the room, and only then does it turn on.

I think the idea with this stuff though is that they're using a part of the UV spectrum that is safe for humans but still kills germs. Like, UV-C won't give you a sunburn, whereas UV-B would? But I don't know much about the details here.

The "new" products are far-UVC (207–222nm), which is safe for humans. Previous germicidal UV has typically been at 254nm.

Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses

Widespread integration of these and HEPA into ventilation systems would, in my opinion, virtually eliminate a wide range of airborne infections, including covid, influenza, and most if not all colds in areas where it is implemented. It's a public health revolution akin to clean water that's just waiting for political and/or commercial leadership.
 
The "new" products are far-UVC (207–222nm), which is safe for humans. Previous germicidal UV has typically been at 254nm.

Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses

Widespread integration of these and HEPA into ventilation systems would, in my opinion, virtually eliminate a wide range of airborne infections, including covid, influenza, and most if not all colds in areas where it is implemented. It's a public health revolution akin to clean water that's just waiting for political and/or commercial leadership.

If you have a forced air ventilation system (heat here in New England, AC in the south) it seems pretty obvious that you could disinfect all the air that circulates through it without ever worrying about exposure.
 
I've seen UV-looking lights high on the walls in the hallways at the VA Medical Center. I always kind of thought they were woo once I found out what they were for, but if they work, great!
 
The little aperture where the pee leaves your body, i.e. the opening of the urethra, is called the 'urinary meatus' , with 'meatus' pronounced differently according to the source you read ;)
 
The "new" products are far-UVC (207–222nm), which is safe for humans. Previous germicidal UV has typically been at 254nm.

Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses

Widespread integration of these and HEPA into ventilation systems would, in my opinion, virtually eliminate a wide range of airborne infections, including covid, influenza, and most if not all colds in areas where it is implemented. It's a public health revolution akin to clean water that's just waiting for political and/or commercial leadership.

Thanks! Yeah, I know less about it than I'd like, but from what I understand it seems like a hugely powerful potential intervention, in some ways analogous to water treatment for the prevention of waterborne illnesses. Like you I'd like to see more urgency in testing and implementation here.
 

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