Can depression affect your memory?

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• Can depression affect your memory?
• If spaceships actually shot lasers in space wouldn't they just keep going and going until they hit something?
• AskScience AMA Series: We're the team behind CAPSTONE, the spacecraft testing the orbit for NASA's future lunar space station! Ask us anything!
• How does acid burn skin on a molecular level?
• Does antimicrobial resistance (AMR) apply to viruses? Or is it just a bacteria thing?
• During the various eras in which dinosaurs existed, and any eras in which megafauna existed, did these eras have less specie diversification or is it more likely that less examples of species diversification was preserved via fossilisation?
• Do batteries in a device which remains idle degrade faster than batteries not in a device?
• Is Obstructive Sleep Apnea a unique muscular phenomenon?
• Do we still have antibodies in our bodies from vaccination that fight polio, measles, and other viruses?
• Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
• what types of magnetic beads can use in nucleic acid extraction? / can all types of magnetic beads use in this process?
• Does the inverse square law apply to lasers?
• If the deepest we have drilled into earth is 7.5 miles, not exceeding earths crust, how do we have detailed descriptions/illustrations of what the other of the thousands of miles look like? For example earths core, the mantle and inner core.
• How are loops, TADs and chromosome compartments different? How are they formed? How do they affect gene activity?
• Why is Icthyostega credited so often as the first land animal? Weren't arthropods and insects there first?
• Why do inbred strains require "at least 20 generations" to be considered clones?
• As an up-regulator of the anti-inflammatory molecule IL-10, what are the practical barriers to installing helminths as a treatment for inflammatory conditions?
• Why is food intake associated with an increase in heart rate even though digestion is controlled by the parasympathetic nervous system which is supposedly decreasing heart rate?

Can depression affect your memory? Posted: 18 May 2022 06:46 AM PDT Im doing my exams n I know the topics pretty well but I keep making small mistakes while writing down my formulae even when I know the correct one it's like my head is somewhere else when I'm noting it down. Sometimes I forget the names of the topics. I've never been this way and this is happening to me all of a sudden. I've been quite depressed these days but I'm coping with it . I jus wanted to know if my depression has anything to do with me forgetting small details in my studies. I don't want it to affect my grades :/ submitted by /u/WDFIWWTW [link] [comments]

If spaceships actually shot lasers in space wouldn't they just keep going and going until they hit something? Posted: 17 May 2022 12:56 PM PDT Imagine you're an alein on space vacation just crusing along with your family and BAM you get hit by a laser that was fired 3000 years ago from a different galaxy. submitted by /u/DRYHITREZHOOT [link] [comments]

AskScience AMA Series: We're the team behind CAPSTONE, the spacecraft testing the orbit for NASA's future lunar space station! Ask us anything! Posted: 18 May 2022 04:00 AM PDT Before NASA's Artemis astronauts head to the Moon, a microwave oven-size spacecraft will help lead the way. The Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment, or CAPSTONE, is a CubeSat mission launching no earlier than May 31, 2022. For at least six months, the small spacecraft will fly a unique elongated path around the Moon. Its trajectory - known as a near rectilinear halo orbit - has never been flown before! After it's tried and tested by CAPSTONE, the same orbit will also be home to NASA's future lunar space station Gateway. CAPSTONE's flight will provide valuable data about this orbit that could support future missions to the Moon and beyond, helping to launch a new era of human space exploration. Commercial partner Rocket Lab will launch CAPSTONE, and small business partner Advanced Space will operate the mission. We are: Elwood Agasid, NASA CAPSTONE lead at NASA's Ames Research Center Justin Treptow, Small Spacecraft Technology program deputy executive at NASA Headquarters Ali Guarneros Luna, aerospace and system engineer at NASA's Ames Research Center Nujoud Merancy, Exploration Mission Planning Office chief at NASA's Johnson Space Center Michael Thompson, CAPSTONE orbit determination lead at Advanced Space Alec Forsman, CAPSTONE lead systems engineer at Advanced Space Ethan Kayser, CAPSTONE mission design lead at Advanced Space Ask us anything about: What makes CAPSTONE's orbit unique How spacecraft like CAPSTONE help demonstrate and test technologies for future missions What the CAPSTONE mission timeline looks like We'll be online to answer questions on Wednesday, May 18 from 1:00-2:30 pm PT (4:00-5:30 pm ET, 8:00-9:30 pm UTC) and will sign our answers. See you then! PROOF: https://twitter.com/NASAAmes/status/1526246040671858689 Username: /u/nasa submitted by /u/AskScienceModerator [link] [comments]

How does acid burn skin on a molecular level? Posted: 18 May 2022 08:11 AM PDT Burn doctors please share your wisdom! We already tried googling it and got very surface level info. Our super awesome biochemist suggested we ask a burn doctor. Drug scientists here! We are wondering how exactly acids burn skin. Like why does it hurt? What part is corroded and how? After a quick Google and some discussions on peptide bonds, we're pretty sure it targets the proteins, but whether that's just the side chains or it also targets the peptide bond, we'd need to waste a day and some money to figure that out. And still would only get a partial answer. I figured I'd ask here instead of make my second bonkers request to my PI over the span of a month, considering this is not at all what our lab's research is on. Also, is it just the proteins or does it mess with other biomolecules too? I'd think anything that could be protonated would be affected. But some are more stable to that than others or are harder to protonate in the first place so idk if that would matter? Thank you for answering our question! submitted by /u/WorldsOkestEcoli [link] [comments]

Does antimicrobial resistance (AMR) apply to viruses? Or is it just a bacteria thing? Posted: 18 May 2022 02:24 AM PDT I understand the general concept of AMR and how it arises when microorganisms gain resistance against antibiotics. It seems many AMR cases involve bacteria though, like E. coli. Can and do viruses also become resistant to antimicrobials? submitted by /u/angry_cat_no_banana [link] [comments]

During the various eras in which dinosaurs existed, and any eras in which megafauna existed, did these eras have less specie diversification or is it more likely that less examples of species diversification was preserved via fossilisation? Posted: 18 May 2022 07:44 AM PDT My son recently asked me the above question (albeit as well as a 5 year old could articulate the question), as his teacher told him that we have discovered over 1,000 different species of dinasaurs from the various periods. My son thought this number was very low and that how do we know there weren't 10x that and we just don't have proof? Is it a case of survivorship bias, in that we only have evidence of those preserved, or is it that during megafauna periods, there are simply less species because food is abundant enough to not need to evolve? submitted by /u/Realitybytes_ [link] [comments]

Do batteries in a device which remains idle degrade faster than batteries not in a device? Posted: 18 May 2022 06:05 AM PDT If so, why? submitted by /u/Wild-Impala [link] [comments]

Is Obstructive Sleep Apnea a unique muscular phenomenon? Posted: 18 May 2022 05:58 AM PDT If Obstructive Sleep Apnea is the situation where, while asleep, the muscles/soft tissues at the back of the throat "relax" or lose muscle tone, but are able to work properly when the person awakens, does this happen with any other muscle group in the body during sleep? ​ If not, what is unique about the muscles in the throat for these patients? Why is this "relaxing" only occurring there during sleep? submitted by /u/dante662 [link] [comments]

Do we still have antibodies in our bodies from vaccination that fight polio, measles, and other viruses? Posted: 18 May 2022 06:22 AM PDT I keep hearing about how our COVID antibodies wane, and I was wondering if this was the case for other viruses submitted by /u/sashyabaral01 [link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 18 May 2022 07:00 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

what types of magnetic beads can use in nucleic acid extraction? / can all types of magnetic beads use in this process? Posted: 18 May 2022 03:41 AM PDT submitted by /u/scinaw [link] [comments]

Does the inverse square law apply to lasers? Posted: 18 May 2022 01:04 AM PDT So I saw this Post on this subreddit, and that got me thinking, does the inverse square law apply to lasers? I did a quick google search and it said no, so how is a lasers diffraction different to normal light? submitted by /u/Astrobot4000 [link] [comments]

If the deepest we have drilled into earth is 7.5 miles, not exceeding earths crust, how do we have detailed descriptions/illustrations of what the other of the thousands of miles look like? For example earths core, the mantle and inner core. Posted: 17 May 2022 04:45 PM PDT submitted by /u/MissNeuroBella [link] [comments]

How are loops, TADs and chromosome compartments different? How are they formed? How do they affect gene activity? Posted: 18 May 2022 03:26 AM PDT I have a hard time separating the different models and levels of chromosome compaction. My understanding so far, which I ask to be corrected on: Questions are marked like this Loops are extruded by the cooperation of condensin and cohesin, but either one is sufficient for visible compaction in single molecule assays. If condesin is the motor and cohesin the anker, how? Extrusion tends to physically halt at binding sites for CTFC transcripton factor in an orientation-dependent manner. What if two cohesins bump into each oher before CTFC? Cohesin 1 sits at the base of smaller loops, whereas cohesin 2 at larger loops. By stacking small loops into and onto large loops, cohesins cluster at a helical chromosome scaffold, where cohesin 2 sits on the inside. Does this scaffold interact with other components? Without loop extrusion, DNA decondenses while similar sequences may aggregate through phase separation e.g. superenhancers. Why the aggregation? TADs or topologically associated domains are the manifestation of loops detected through Hi-C. They are flanked by CTFC binding sites. Are CTFC binding sites also found within TADs thus containing multiple sub-loops? Compartments are a higher level of compaction also detectable through Hi-C that persist even after the eliminiation of cohesin and TADs. They emerge epigenetically. How? They have nothing to do with condensin 2, right? Chromosome compaction generally downregulates gene expression. Loop extrusion disturbs the interaction of trans-acting superenhancers, but facilitates the function of cis-acting enhancers. Right? Compartments may be transcriptionally active or inactive and transit between the two states. How? submitted by /u/senjadon [link] [comments]

Why is Icthyostega credited so often as the first land animal? Weren't arthropods and insects there first? Posted: 17 May 2022 09:09 PM PDT From what I've been able to find, bugs like Arthropods and arachnids were the first to colonize the land. Which would make sense to me, as they seemed more readily adapted to move to land. Yet countless credible sources constantly cite Ichthyostega as the first land animal and the go on about mammalian and reptilian evolution. I guess my follow up question would also be, what did the evolutionary line of arthropods look like as they moved to land? submitted by /u/xxkoloblicinxx [link] [comments]

Why do inbred strains require "at least 20 generations" to be considered clones? Posted: 18 May 2022 07:59 AM PDT According to Wikipedia, " A strain is inbred when it has undergone at least 20 generations of brother x sister or offspring x parent mating ... and each individual can be treated effectively as clones." But clones (or identical twins) are normally defined in terms of the coefficient of relationship, and my understanding is that many successive generations of inbreeding between first-degree relatives causes the COR to increase at a rate of exponential decay (1/2+1/4+1/8+1/6). In which case, the COR would be ~98.4% after only 5 generations of this, not 20. What am I missing? submitted by /u/ashley_msgr [link] [comments]

As an up-regulator of the anti-inflammatory molecule IL-10, what are the practical barriers to installing helminths as a treatment for inflammatory conditions? Posted: 18 May 2022 07:18 AM PDT submitted by /u/ALetterAloof [link] [comments]

Why is food intake associated with an increase in heart rate even though digestion is controlled by the parasympathetic nervous system which is supposedly decreasing heart rate? Posted: 18 May 2022 07:06 AM PDT There are a couple of things I have trouble understanding. Maybe you can clear up my thinking? the parasympathetic nervous system is responsible for recovery ("rest and digest") the parasympathetic nervous system decreases heart rate while the sympathetic nervous system increases heart rate thus, as food intake activates the parasympathetic nervous system, eating should lower heart rate however, in reality, eating increases heart rate for a couple of hours Where do I get confused? Is food intake associated with recovery or not? submitted by /u/Boring_Tumbleweed733 [link] [comments]

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How can our brain recognize that the same note in different octaves is the same note?

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• How can our brain recognize that the same note in different octaves is the same note?
• What evidence is there that the syndromes currently known as high and low functioning autism have a shared etiology? For that matter, how do we know that they individually represent a single etiology?
• If black absorbs all wavelengths of visible light, then how can we perceive lights of different colours shining on a black object? Aren't these rays reflecting back to our eyes, implying that the light is not absorbed?
• Do we know what the population density of dinosaurs were?
• Why do "mineral sunscreens" (titanium oxide, zinc oxide) become transparent when they are "rubbed in" to the skin?
• How can biologists (or entemologists) definitively tell whether an insect like an ant is dead or not?
• How is a virus like chicken pox able to remain dormant in your body and manifest itself again later in life as Shingles (sometimes even decades later)?
• Have any rigorous studies shown probiotics that can actually improve gut health?
• How does an epidemiologist (or other researcher) determine if a newly experienced disease or condition is a genetic disease or otherwise?
• Do fish make friends with eachother? Do they make friends with fish that aren't the same type of fish as themselves?
• I'm tone deaf and cannot recognize different notes or any aspects of music aside from melody and rhythm, are there identified distinctions between the brains of musically gifted people and people who are not?
• Would the mass of a galaxy be considered orbiting its central black hole?
• Does altitude or air pressure affect the frequency of sound?
• why does a bigger brain not equal more intelligence?
• What causes spiral galaxies to be spiral, not evenly distributed like a globe?
• How surfactants act as both emulsifiers ans deemulsifiers?
• Can multiple planets exist in the same orbital path?
• How much does an ant colony remember about locations of food?
• Why does silicone rubber stick to skin?
• What caused the earth’s rotation and what dictated the rate at which it spins? Have we lost any speed over the billions of years?
• Is there any evidence that prehistoric man suffered from acne?
• Does sunlight and rain affect the nitrate content of soil?
• Some drugs, vaccines, etc, can be administered with a simple shot in the arm. Others require an IV. What's the difference?
• Could a sniffer dog tell if two people were related?
• How can we explain the tilt of Sagittarius A*'s axis of rotation relative to the galactic plane?

How can our brain recognize that the same note in different octaves is the same note? Posted: 17 May 2022 07:48 AM PDT I don't know a lot about how sound works neither about how hearing works, so I hope this is not a dumb question. submitted by /u/loefferrafael [link] [comments]

What evidence is there that the syndromes currently known as high and low functioning autism have a shared etiology? For that matter, how do we know that they individually represent a single etiology? Posted: 16 May 2022 06:41 PM PDT submitted by /u/vaguelystem [link] [comments]

If black absorbs all wavelengths of visible light, then how can we perceive lights of different colours shining on a black object? Aren't these rays reflecting back to our eyes, implying that the light is not absorbed? Posted: 17 May 2022 04:38 AM PDT submitted by /u/polarchips [link] [comments]

Do we know what the population density of dinosaurs were? Posted: 17 May 2022 12:55 PM PDT If I hopped in a time machine and flew around 80 million years ago, would there be dinosaurs all over the place or would they have been sparse? How would we know this? submitted by /u/Seki_a [link] [comments]

Why do "mineral sunscreens" (titanium oxide, zinc oxide) become transparent when they are "rubbed in" to the skin? Posted: 17 May 2022 02:45 PM PDT submitted by /u/_Rumpertumskin_ [link] [comments]

How can biologists (or entemologists) definitively tell whether an insect like an ant is dead or not? Posted: 17 May 2022 01:22 PM PDT Some insects can just lie dormant for days, and don't visibly look alive. Are there things like EKG's for insects? Or are other signs used to determine this? Just for background, I have absolutely no background in advanced biology or entemology, but I looked up for answers online and didn't find any. Apologies if this is a stupid question! submitted by /u/HowIsBuffakeeTaken [link] [comments]

How is a virus like chicken pox able to remain dormant in your body and manifest itself again later in life as Shingles (sometimes even decades later)? Posted: 16 May 2022 02:38 AM PDT I apologise if my understanding is incorrect, but I've watched a few videos on the Immune system and the really basic takeaway I got on how it works is something like: Virus detected > Immune system battles virus > Recovery From my understanding there is also something involving Memory cells and Helper T cells to help protect you against the same virus/bacteria once you've recovered. So why then is something like Chicken pox simply able to recede into our nerves and not be bothered by our Immune system instead of being fully eradicated in the first place? submitted by /u/Lunchyyy [link] [comments]

Have any rigorous studies shown probiotics that can actually improve gut health? Posted: 16 May 2022 08:55 AM PDT submitted by /u/dramaking37 [link] [comments]

How does an epidemiologist (or other researcher) determine if a newly experienced disease or condition is a genetic disease or otherwise? Posted: 17 May 2022 03:21 PM PDT Is it simply process of elimination? (i.e. it's not viral or bacterial, etc.) If there is a record of a particular disease or condition existing within a family or a sub-population of people then, if I understand correctly, linkage analysis can be used to try and locate what specific genetic markers could be related to the traits of the disease. But let us say that a brand new disease is experienced within a patient. What would an example, if simplified that is fine, set of steps that would lead an epidemiologist to conclude that the disease is genetic? submitted by /u/OmightyDurn [link] [comments]

Do fish make friends with eachother? Do they make friends with fish that aren't the same type of fish as themselves? Posted: 17 May 2022 01:33 PM PDT Like, especially in a school of fish such as neon tetras, for a simple example. Do they have certain members of the school that they like or dislike, do they make friends and enemies? submitted by /u/warm_email [link] [comments]

I'm tone deaf and cannot recognize different notes or any aspects of music aside from melody and rhythm, are there identified distinctions between the brains of musically gifted people and people who are not? Posted: 17 May 2022 09:01 AM PDT submitted by /u/ackzilla [link] [comments]

Would the mass of a galaxy be considered orbiting its central black hole? Posted: 17 May 2022 01:35 PM PDT This is more of a question of definition. I understand that unlike orbits in a star system, even something as massive as a black hole is nothing compared to the mass of the galaxy and that a galaxy is considered orbiting itself or the center of mass. I want to know if orbit would even be the right term for the relationship between the black hole and the galaxy. Obviously you can consider close by stars to be in its orbit and of course the reach of gravity is infinite and there would be some effect on the galaxy as a whole, but would just being an object which is at the center of the galaxy make the galaxy in orbit around it? If the black hole is simply within the center of orbital path of the stars in the galaxy, can we say the galaxy is orbiting it? submitted by /u/rathat [link] [comments]

Does altitude or air pressure affect the frequency of sound? Posted: 17 May 2022 01:31 PM PDT I ask this because I have perfect pitch and lived most of my life in a city that's about 5,300' in altitude. After moving to a city that's lower (4,500'), I noticed that everything started sounding about a quarter note higher (a C, for example, started sounding like a slightly sharp C or a slightly flat C#). I thought I was just losing my sense of perfect pitch (I do have some permanent hearing loss), but occasionally when I travel, things sound a little more like they used to. So I guess that's my question. Does altitude or air pressure affect the frequency of sounds? Or would this more likely be due to hearing loss? submitted by /u/Brossentia [link] [comments]

why does a bigger brain not equal more intelligence? Posted: 16 May 2022 10:38 AM PDT I understand that the size of a cell is almost constant regardless of what animal it makes up. A whale brain for instance weighs more than a human brain hence it must have more neurons, if it can make more neural connections, why isn't it smarter, I would expect intelligence to be somewhat proportional to the number of neurons. If this is not the case, why would evolution not just have made a wale have a human like brain? to the whale, the energy required to run a human brain would be insignificant submitted by /u/14silicium [link] [comments]

What causes spiral galaxies to be spiral, not evenly distributed like a globe? Posted: 17 May 2022 10:35 AM PDT What causes the stars to orbit a bit like a sunny side up egg and not spherical? submitted by /u/attemptnumber58 [link] [comments]

How surfactants act as both emulsifiers ans deemulsifiers? Posted: 17 May 2022 09:30 AM PDT I read surfactants reduce surface tension and disperse oil in water. But I also read that it acts as a demulsifier. How do they do two seemingly opposite activities? Thank you submitted by /u/Zealousideal-Buy-382 [link] [comments]

Can multiple planets exist in the same orbital path? Posted: 16 May 2022 02:36 PM PDT My understanding of planetary formation is that a disc of material eventually coalesces in a singular object, but is it possible that it happens in one or more locations in the same orbit? Could there be two planets on opposite sides of a star orbiting in sync? Could earth have a twin behind the star that we never see? submitted by /u/Zulunation14 [link] [comments]

How much does an ant colony remember about locations of food? Posted: 16 May 2022 10:55 PM PDT Specifically, if some of the food an ant colony finds is toxic, will they avoid that area in the future? There's an ant colony under my house and while I don't necessarily want to wipe them out (ants are still preferable to termites), I don't really want them in the house, either. If I put a small amount of ant insecticide in the areas of the house they tend to show up in, could I be able to 'train' them to stay outside without wiping out the whole colony? submitted by /u/NWCtim_ [link] [comments]

Why does silicone rubber stick to skin? Posted: 17 May 2022 02:31 AM PDT Silicone rubber gathers dust easily and sticks (weakly) to skin and other materials. What makes silicone so naturally sticky? Does it have to do with electrostatics? submitted by /u/TopIndep [link] [comments]

What caused the earth’s rotation and what dictated the rate at which it spins? Have we lost any speed over the billions of years? Posted: 16 May 2022 10:30 AM PDT My son asked my a perplexing question regarding earth and why it actually spins. I didn't have a 100% grasp on the subject so I gave him the "I dunno buddy," answer. I'm familiar with the Big Bang, but were all planets, suns, stars created at this one event? Did the order of chaos (planets collided/were destroyed and what we see is the aftermath) create our solar system to revolve around the sun in the same direction? Did the same Big Bang that made these enormous rocks also cause them to spin while being yanked into ellipses around a large grav source? submitted by /u/Spatula151 [link] [comments]

Is there any evidence that prehistoric man suffered from acne? Posted: 15 May 2022 07:37 AM PDT Fighting with my teenage daughter to wash her face. Her defense included her reasoning that prehistoric man didn't have face wash, since no cave drawings depict acne, so she doesn't need to wash her face. I know, I know. Ridiculous. I've already countered with the fact that they didn't have pollution in the air, their food didn't have chemical additives, etc. But was hoping that this community could back me up on the caveman acne front. Edit: thanks guys for all the wonderful input! I really appreciate the responses from so many different perspectives. Just wanted to clarify that she doesn't currently have acne, other than the occasional pimple or zit; and she does have good body hygiene. Her argument is that she doesn't want to remove all of her natural oils with any harsh (or even gentle) cleansers; she's very much into natural products. Since she is now a little wearing makeup, I think it's important that her face be cleaned every day. submitted by /u/czechmate0500 [link] [comments]

Does sunlight and rain affect the nitrate content of soil? Posted: 16 May 2022 10:58 PM PDT I've recently read about this Indian metalcraft called bidriware. https://en.wikipedia.org/wiki/Bidriware It's these white brass metalware objects with blackened surfaces. The metal is 1 part copper and 16 parts zinc. The center of production of bidriware in India is the city of Bidar. White brass has a pale gray appearance. Bidriware craftsmen blacken their ware using soil they obtain from a 15th century fort in Bidar. They say that in certain parts of the fort, the soil receives no sunlight or rain and thus acquires "special properties" that cause it to blacken the bidriware. From some scientific papers I read, the soil in question is rich in potassium nitrate. When applied to the bidriware object, the potassium nitrate oxides the copper, which creates the black patina. Does sunlight and rain break reduce the nitrate content of soil? The craftsmen say its the soil that doesn't get sunlight or rain that has the properties they desire. submitted by /u/Beneficial_Squash-96 [link] [comments]

Some drugs, vaccines, etc, can be administered with a simple shot in the arm. Others require an IV. What's the difference? Posted: 16 May 2022 06:58 AM PDT submitted by /u/option8 [link] [comments]

Could a sniffer dog tell if two people were related? Posted: 16 May 2022 10:31 AM PDT Even if they grew up in different environments or didn't even know they were related? submitted by /u/elliottcrawford69 [link] [comments]

How can we explain the tilt of Sagittarius A*'s axis of rotation relative to the galactic plane? Posted: 16 May 2022 01:08 PM PDT The axis of rotation of the black hole in the middle of the Milky Way appears to be roughly pointing at Earth, which means it points parallel to the galactic plane. Naively, one would expect that like the Sun's axis of rotation is perpendicular to the ecliptic plane, the black hole's axis of rotation would be perpendicular to the galactic plane. I know we typically ascribe some planets having weird axes of rotation (e.g., Uranus' "sideways" rotation or Venus' retrograde rotation) to big collisions with other objects, but this is a totally different scale. Is the tilt of Sagittarius A*'s axis of rotation explainable in terms of a collision (say, a galactic merger) or is there some other way to explain it? submitted by /u/db0606 [link] [comments]

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is it possible that an ancestor of a species has more or less chromosomes?

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• is it possible that an ancestor of a species has more or less chromosomes?
• Why does the cone-shaped flaring out of brass instruments make the sound louder?
• Do female and male brains develop at the same rate?
• If someone has their ovaries removed as part of a hysterectomy, does that mean they can never get ovarian cancer?
• What makes the lumps in cauliflower ear become solid?
• Do all planets have an iron core?
• Why can’t non-ferrous metals be carburized?
• How are freshwater cetaceans (specifically thinking about the Ganges and Amazon river dolphin) related?
• What are the biggest obstacles in 3D printing human tissue or organs?
• Why is deoxyhaemogloblin abbreviated as HbR? What does the R stand for?
• Does the soldier caste of an ant colony participate in the hunt for for food?
• Why don't humans have the same amount of control over individual toes as we do over fingers?
• what is the most environmentally friendly way to dispose of our dead?

is it possible that an ancestor of a species has more or less chromosomes? Posted: 14 May 2022 10:15 AM PDT I was wondering about how the amount of chromosomes were affected by evolution. Like is it possible that one ancestor has more chromosomes or less chromosomes? So basically: how does the amount of chromosomes correlate to evolution? submitted by /u/koshiboto [link] [comments]

Why does the cone-shaped flaring out of brass instruments make the sound louder? Posted: 14 May 2022 09:19 PM PDT All brass instruments (and some others) seem to have a cone-shaped flaring to make the sound louder? As well as old record players. What is the reason for this? submitted by /u/FantasticPiglet [link] [comments]

Do female and male brains develop at the same rate? Posted: 14 May 2022 09:12 PM PDT I've tried looking it up on Google but I couldn't find a clear result. I was wondering if anyone knew if male and female brains fully develop at the same age or if one develops sooner than the other. submitted by /u/ThatOneQuietDude [link] [comments]

If someone has their ovaries removed as part of a hysterectomy, does that mean they can never get ovarian cancer? Posted: 14 May 2022 04:54 PM PDT Or is it possible ovarian cancer cells could already be in the body and manifest in another organ? submitted by /u/janedoecurious [link] [comments]

What makes the lumps in cauliflower ear become solid? Posted: 14 May 2022 06:29 PM PDT Is it scar tissue or a buildup of extra cartilage that fills the area? The puffy, traumatized area is soft & a bit squishy in the fist stages, but it solidifies later on. submitted by /u/PerspectiveHuman3800 [link] [comments]

Do all planets have an iron core? Posted: 14 May 2022 03:51 PM PDT Additional related question: Can a planet have a core of molten nickel or some other metal? submitted by /u/UntouchedWagons [link] [comments]

Why can’t non-ferrous metals be carburized? Posted: 14 May 2022 07:10 AM PDT submitted by /u/ghostoftheuniverse [link] [comments]

How are freshwater cetaceans (specifically thinking about the Ganges and Amazon river dolphin) related? Posted: 14 May 2022 04:22 PM PDT Something that just popped into my head was how morphologically similar the Ganges and Amazon river dolphins are. Is it due to analogous evolution, or do they simply share a somewhat recent common ancestor? submitted by /u/Zekiram58 [link] [comments]

What are the biggest obstacles in 3D printing human tissue or organs? Posted: 14 May 2022 03:48 AM PDT submitted by /u/calmdreams97 [link] [comments]

Why is deoxyhaemogloblin abbreviated as HbR? What does the R stand for? Posted: 14 May 2022 01:37 PM PDT In a lot of scientific literature, oxyhaemoglobin is abbreviated as HbO, which makes complete sense (Hb for haemoglobin, O for oxy). Does anyone know what the R stand for in HbR? submitted by /u/miss_minutes [link] [comments]

Does the soldier caste of an ant colony participate in the hunt for for food? Posted: 14 May 2022 01:15 AM PDT I vaguely remember learning at school that soldier ants's sole job is to guard the colony and literally nothing else. But now that I think about it, arent they a bit more suitable at wounding and killing thanks to their larger size and more powerful mandibles? Plus they usually follow the workers whenever they go out foraging for food anyways to guard them. Doesnt make sense that this bigger, stronger ant wouldnt at least help out. submitted by /u/samazam94 [link] [comments]

Why don't humans have the same amount of control over individual toes as we do over fingers? Posted: 14 May 2022 02:26 AM PDT Mechanically they seem very similar. Is there a downside to having individually controllable toes? I love grabbing socks off the floor with them, but I don't seem to manage complex tasks 😀 submitted by /u/NuevoLucha [link] [comments]

what is the most environmentally friendly way to dispose of our dead? Posted: 13 May 2022 10:57 PM PDT Burial? Composting? Wood pyre burn? Tossing into the middle of the sea? I'm assuming electric cremation is out. But honestly curious what the best choice would be with so many options. submitted by /u/Marshmallow_Genocide [link] [comments]

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