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Thursday, July 16, 2020

COVID-19 started with one person getting infected and spread globally: doesn't that mean that as long as there's at least one person infected, there is always the risk of it spiking again? Even if only one person in America is infected, can't that person be the catalyst for another epidemic?

COVID-19 started with one person getting infected and spread globally: doesn't that mean that as long as there's at least one person infected, there is always the risk of it spiking again? Even if only one person in America is infected, can't that person be the catalyst for another epidemic?


COVID-19 started with one person getting infected and spread globally: doesn't that mean that as long as there's at least one person infected, there is always the risk of it spiking again? Even if only one person in America is infected, can't that person be the catalyst for another epidemic?

Posted: 15 Jul 2020 10:50 AM PDT

Are we learning about other viruses besides COVID while learning about COVID? If so, what

Posted: 15 Jul 2020 05:05 PM PDT

If we were to completely overhaul the SI units to be based on fundamental measurements in the universe, what kind of units could we expect? Would it be any useful?

Posted: 16 Jul 2020 04:40 AM PDT

Instead of relying on arbitrary measurements, what if we set fundamental constants as a base unit (1 Planck length = 1 unit, 1 elementary charge = 1 unit) instead of what we have now (1 metre or 1 Coulomb as defined by the Ampere)? Would all the SI quantities have available elementary values? Is it of any use to us as humans (perhaps in the far future as an interstellar civilisation)?

submitted by /u/BoyMcBoyo
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Why don't new mountain ranges form?

Posted: 16 Jul 2020 01:55 AM PDT

Only certain places in the world have mountain ranges and others don't and never will, why not?

submitted by /u/Human_Tier
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What are the determinants of immunoglobulin glycosylation patterns?

Posted: 15 Jul 2020 08:20 PM PDT

Or more specifically, what immunological or metabolic signals (or stressors) cause decreased fucosylation of antibodies? This question was inspired by this recent preprint showing that IgG antibodies from the serum of patients who recovered from severe COVID-19, but not recombinant antibodies, may have a causal role in severe illness due to differences in inflammatory signaling depending on the presence of fucosylation in the Fc region. This research follows from other research finding decreased fucosylation among patients with severe COVID-19. This latter finding has been replicated in other studies.

I'm wondering whether this is permanent and related to the IgG isotype/subclass or other stable characteristics of B-cell biology, or whether these "de-fucosylated" antibodies may be replaced over time.

submitted by /u/ZoneNervous
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Results of recently published vaccine trial: what can I take away from the results? What does this mean for the next clinical trial?

Posted: 15 Jul 2020 06:21 PM PDT

Biology undergrad student here! I live in an area where they are recruiting people for a phase 3 vaccine clinical trial (mRNA-1273 vaccine, Moderna) for COVID-19. This trial has been in the news, but as a biology student, I definitely want to know the science behind it (and not just the sensational media rhetoric). The research group published the results from the phase 1 trial, and I've been reading the paper and had a few questions about it, and wanted to hear thoughts from other experts in the field.

Link to paper: https://www.nejm.org/doi/full/10.1056/NEJMoa2022483

  1. Does a greater antibody response necessarily mean improved immunity? Doesn't the trial ultimately have to involve some viral-exposure component (ie. subjects that received vaccine are then exposed to virus, and then measure immune response) to prove effectiveness?
  2. How does an mRNA vaccine work? My understanding is that the mRNA of the spike protein is injected, which creates antibodies...but how?
  3. What is a pseudovirus neutralization assay? Does it use a nonactive virus to see if it infects the subject? Is it an invivo or invitro thing?

And this last question comes close to rule 1 (I can remove it if needed): the phase 3 trial will involve 30,000 subjects. The fact that the trial is at phase 3, I'm assuming, means that there's a greater chance that the vaccine is effective rather than not, and is safe rather than not. Is this a fair assumption? Would you feel comfortable signing up for this clinical trial?

Any insight is appreciated, and stay safe!

submitted by /u/PowerOfMitochondria
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What does the term “Covid19 long-hauler” imply?

Posted: 15 Jul 2020 09:56 PM PDT

I have seen this term in the news many times and know of people that still have symptoms months after recovering. Does this means that the virus was never eliminated 100% from the body? Or is that a result of permanent damage? Any answer to this phenomenon is appreciated.

submitted by /u/trust_me_on-this_one
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Why does cough syrup make you feel sleepy?

Posted: 15 Jul 2020 09:35 PM PDT

Is it possible for a comet to have an orbital period greater than the age of the star it orbits?

Posted: 15 Jul 2020 11:41 AM PDT

The answer feels like yes, however I am suspicious that such an orbit would require a perigee velocity greater than the escape velocity, making it implicitly impossible.

The age of the star would certainly matter of course, so maybe this is a 'yes', but only for very young stars?

submitted by /u/Yen1969
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The Holocene Epoch - What will the next one be?

Posted: 15 Jul 2020 07:10 PM PDT

How are eras, periods, epochs, etc. defined and how are they named? Will current events stimulate the birth of the next epoch?

submitted by /u/Gasoline_Dion
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About coming up with a vaccine for SARS-CoV-2; how does it compare in difficulty against creating one for the common cold?

Posted: 15 Jul 2020 08:01 AM PDT

How long after being exposed to Covid are you able to transmit the disease to to others?

Posted: 15 Jul 2020 12:36 PM PDT

If I come in contact with someone with Covid, how long after the initial interaction, if I have it, will having contact with others spread the disease? Is it instantly passed or is there an amount of time before it becomes contagious? (This is not medical advice, it is purely hypothetical)

submitted by /u/nickfrank11
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If a person has herpes are they immune-compromised?

Posted: 15 Jul 2020 12:57 PM PDT

Are there any instances of vaccines that provide a better immune response than if you had been infected?

Posted: 15 Jul 2020 11:47 AM PDT

Wednesday, July 15, 2020

AskScience AMA Series: We are statistics professors with the American Statistical Association, and we're here to answer your questions about data literacy in an age of disinformation. Ask us anything!

AskScience AMA Series: We are statistics professors with the American Statistical Association, and we're here to answer your questions about data literacy in an age of disinformation. Ask us anything!


AskScience AMA Series: We are statistics professors with the American Statistical Association, and we're here to answer your questions about data literacy in an age of disinformation. Ask us anything!

Posted: 15 Jul 2020 04:00 AM PDT

We're Dr. Karen Kafadar, Dr. Richard De Veaux and Dr. Regina Nuzzo, all statistics professors with the world's largest community of statisticians, the American Statistical Association.

We are excited to discuss how statistical education is crucial for minimizing the public's susceptibility to disinformation. That includes journalists, who play a pivotal role in improving data literacy.

I'm Karen, and I'm a statistics professor, Chair of the University of Virginia's Department of Statistics, and 2019 President of the ASA. Ask me anything about how the statistical community and the media can help the public understand and be less influenced by fake news.

Last year, I helped champion ASA's "Disinformation Initiative" for statisticians and computer scientists to collaborate and address the challenges associated with this deception. I've served on several National Academy of Sciences' Committees, including those that led to the reports Strengthening Forensic Science in the United States: A Path Forward (2009), Review of the Scientific Approaches Used During the FBI's Investigation of the Anthrax Letters (2011), and Identifying the Culprit: Assessing Eyewitness Identification (2014).

I'm Dick, and I'm a statistics professor at Williams College and the current Vice President of ASA. Ask me anything about how to communicate important statistical ideas in ways that everyone can use, especially during this time of disinformation and confusion.

I've written six high school and college statistics textbooks that have been read by literally millions of students. They've even appeared on Reddit a few times. I give keynote addresses and workshops around the world and have appeared on radio (WAMC and Marketplace) and TV (NOVA and PBS). In my spare time I sing with the Choeur Regional de l'Ile de France in Paris (when I'm there) and have appeared with them on both CDs and French radio and TV. I'm also known as the "Official Statistician for the Grateful Dead." Yes, you can ask about that.

I'm Regina, and I'm ASA's Senior Advisor for Statistics Communication and Media Innovation. Ask me anything about non-traditional ways to showcase statistics and how to communicate statistics to the public in an age of disinformation.

I'm also a professor at Gallaudet University and an adjunct professor at Virginia Tech. My work has been published in The New York Times, Scientific American and ESPN Magazine, among other outlets. My feature article on p-values for Nature, which won ASA's 2014 Excellence in Statistical Reporting Award, remains in the top 5% of all research outputs scored by Altmetric. I was also featured in PBS's "NOVA: Prediction by the Numbers," I'm particularly interested in how easy it is for us to fool ourselves and others with statistics during data analysis and the scientific process, and how we should be communicating quantitative information in a way that our brains can "get it" more easily.

We will be on at noon ET (16 UT), ask us anything!

Username: Am_Stat

submitted by /u/AskScienceModerator
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Do you accelerate when moving north/south?

Posted: 15 Jul 2020 05:04 AM PDT

I might come off as a bit stupid for asking this question, but intuitively I can't help but tell myself that it makes sense.

For instance: I live in the northern hemisphere. When moving southward, shouldn't I technically be accelerating eastward? As I move closer towards earths axis of rotation (equator), my perpendicular velocity would increase, right?

I'm aware that this correlates to the coriolis force, but I'm simply unsure of how an object moving towards the equator would be affected? I'm sure the force would be incredibly insignificant (when it comes to actually 'feeling' it), although I wonder whether it would be relevant at much higher velocities?

submitted by /u/SinnyJ
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Neowise has just recently been discovered. What are the chances of discovering an asteroid that will come dangerously close to earth shortly after discovery?

Posted: 15 Jul 2020 04:33 AM PDT

After the large comets in the 90s, astronomers said it will take a while before we see the next one. Yet here we are, 4 months after neowise was initially discovered.
I know that neowise is a comet and not an asteroid, but I suspect methods of discovering are the same? I'm just wondering what the chances are that we discover an object in space that will come dangerously close to earth within a short period of time.

submitted by /u/destiny84
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Does color blindness affect a person's ability to see in darkness/dim light?

Posted: 15 Jul 2020 03:35 AM PDT

I've heard people who only rod can see well in dim light than a normal person, but I've also heard the opposite. I've also heard night vision is based on the different wavelengths of colors. So does a person who have some kind of color blindness would have better/worse night time vision than a normal person?

submitted by /u/TommyDi7
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Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology

Posted: 15 Jul 2020 08:09 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
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When it says stress causes obesity, does it mean it directly causes it, or stress leads to it?

Posted: 15 Jul 2020 04:09 AM PDT

To clarify; does this mean if I am stressed and otherwise normal would one become overweight, or does it cause worse decisions, like overeating?

submitted by /u/Some-MCFC-Fan
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Can already having a fever make you less susceptible to other viruses?

Posted: 15 Jul 2020 06:06 AM PDT

For example if you have the flu with a high fever and then you're exposed to coronavirus does that high body temperature in any way hinder the replication of the coronavirus inside you?

submitted by /u/Satlih
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Would Moderna’s mRNA new coronavirus vaccine incite a T-cell response in the body?

Posted: 14 Jul 2020 03:09 PM PDT

If someone is asymptomatic to the novel corona virus, if they get infected again, will they show symptoms?

Posted: 14 Jul 2020 12:52 PM PDT

Am I missing a point somewhere?

submitted by /u/JesseOAK
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There have been suggestions that there might be a resurgence of Covid-19 in the winter, how likely is this?

Posted: 15 Jul 2020 01:52 AM PDT

And if it is likely, then are countries in the Southern hemisphere already experiencing this?

submitted by /u/Jezzazza
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What is long lasting immunity contingent on, and why are some antibodies “better quality” than others if they all undergo affinity maturation?

Posted: 14 Jul 2020 09:17 AM PDT

Current Biological sciences student here. From my immunology module, I understand the processes of affinity maturation and memory B and T cell production. However, I wanted to gain more insight into what determines the quality of the high affinity antibodies, if they all undergo hyper mutation in the dark regions, is quality of antibody just down to chance?

additionally why is it some viruses like measles confer life long immunity but some common coronaviruses produce short lived immunity? If antibodies are gradually replenished then why is it for some diseases this replenishment continues for longer?

If you have any sources which explain this please do leave links!

submitted by /u/mt101__
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Would it be possible to handpick from a lab, or even cause, a mutation in the corona virus making it much less lethal and severe?

Posted: 14 Jul 2020 01:02 PM PDT

And, would there be any benefit to doing so?

submitted by /u/JesseOAK
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Moderna is starting phase 3 of the covid-19 vaccine trial July 27, how long until we see the results?

Posted: 14 Jul 2020 04:47 PM PDT

Is it possible to develop vaccines for future pandemics?

Posted: 15 Jul 2020 12:16 AM PDT

Obviously we have no idea when and where the next pandemic will come from. However, in the case of COVID-19, we've been able to identify its relationship with the broader coronavirus family and its shared characteristics with other zoonotic strains that have appeared multiple times in the recent past. As such, I would assume the likelihood of another variation of the coronavirus appearing in the not so distant future is high.

So, since we can identify the shared characteristics of the like strains and (probably more importantly) how they differ, can we "predict" how future strains of the virus are likely to manifest? If we were to identify a set of say the 10k most likely strain variations (or however much will be a representative sample size), could we then simulate how different vaccine candidates would work against these potential future strains in order to preemptively find vaccines (or at least the components for vaccines)?

submitted by /u/BASSLJ
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What would happen if all the micro-organisms on and in your body suddenly disappeared?

Posted: 14 Jul 2020 08:40 AM PDT

Things like gut flora, helpful (and harmful) bacteria, mites, basically everything that isn't an actual part of your body like cells. What would happen if they all disappeared at once? Would you die?

submitted by /u/Greyrust
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How would a charged black hole work?

Posted: 14 Jul 2020 03:37 PM PDT

So (stationary) black holes have 3 parameters that describe everything about it. These are mass, angular momentum, and electric charge.

Obviously this would never happen in real life, but what would happen if a black hole was made purely of protons, and thus became extremely positive?

Since no information can escape from a black hole, would electrons not be attracted to the black hole beyond the normal attraction through gravity?

Would a proton placed inside the event horizon be launched out, since magnetism is unfathomably more powerful than gravity?

If electrons aren't attracted to the black hole, wouldn't conservation of charge be broken?

For reference, I've learned all about the normal college level stuff, but not the level where there's 13 symbols, and only 1 is actually in the normal alphabet.

submitted by /u/BobACanOfKoosh
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How jet engines adjust their speed?

Posted: 14 Jul 2020 11:26 AM PDT

I think we can seperate a jet engine into four sections: Intake, Compression, Combustion and Exhaust.

I've read that in order to start the engine, an electric motors spins the main turbine shaft and then igniter sparks the fuel.

Bu how these engines adjust their speed? Is it only dependent on the amount of fuel burned in combustion chamber?

submitted by /u/Fallacyfall
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Why do people make definitive statements about the R0 of a virus? Is it not a relative term?

Posted: 14 Jul 2020 12:11 PM PDT

I see people say that covid's R0 is 'x', or the flu has an R0 of 'y', but is the R0 not a variable that can change depending on how people, governments, etc treat the spread of a virus?

submitted by /u/Ploka812
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Could you create a 'dent' in the event horizon of a black hole by placing a large mass next to it?

Posted: 14 Jul 2020 08:52 AM PDT

The event horizon of a black hole, to my understanding, is the boundary where you would need to be going away from the black hole above the speed of light in order to escape, an impossible task. This event horizon is caused by the gravitational pull of the singularity inside the black hole pulling 'in'.

Now let's say I put another mass near the event horizon. This mass would have its own gravity, and since it's next to the black hole, from our perspective it's pulling 'out'.

If you were to somehow measure the net pull at the original event horizon under the second mass, would it be possible that the second mass may have counteracted some of the pull 'inwards'? Could this push the event horizon inwards, putting a dent-like depression into the previously almost spherical event horizon?

This is all putting aside the nuances of accretion discs, rotation, and how you actually get this second dense mass in the first place - it might even be a second black hole.

submitted by /u/Alephbetae
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Tuesday, July 14, 2020

Do oceans get roughly homogeneous rainfall, or are parts of Earth's oceans basically deserts or rainforests?

Do oceans get roughly homogeneous rainfall, or are parts of Earth's oceans basically deserts or rainforests?


Do oceans get roughly homogeneous rainfall, or are parts of Earth's oceans basically deserts or rainforests?

Posted: 13 Jul 2020 09:35 PM PDT

AskScience AMA Series: I'm Lisa Fazio, a psychology professor who studies why people believe misinformation and how to correct it, AMA!

Posted: 14 Jul 2020 04:00 AM PDT

Hi Reddit! I'm Dr. Lisa Fazio and I'm an Assistant Professor of Psychology at Vanderbilt University in Nashville, TN. My research focuses on how people learn correct and incorrect information from the world around them and how to correct errors in people's knowledge. I'm particularly interested in human memory and the cognitive processes underlying learning.

In my Building Knowledge lab we study -

Why it's hard for us to notice errors in what we read:

The effect of repetition on belief:

And ways to help reduce the spread of misinformation:

I'll be joining at 2pm CT (3 PM ET, 19 UT). Ask me anything!

Username: cheesaf

submitted by /u/AskScienceModerator
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Do other cold/flu viruses cause permanent organ damage like COVID-19 does?

Posted: 13 Jul 2020 07:28 PM PDT

With COVID-19, permanent damage is almost a given. How does the lasting damage compare to common widespread seasonal illnesses?

submitted by /u/WolfsToothDogFood
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Why is the core body temperature of humans seemingly so consistent, when we vary so much in other characteristics?

Posted: 13 Jul 2020 07:11 PM PDT

To expand on the title, I'm asking why ideal core body temperature is the seemingly the same for everyone, regardless of age, sex, size, etc etc.

submitted by /u/ItsABiscuit
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With the threat of the Thwaites Glacier breaking off into the ocean, what would that look like to coastal cities?

Posted: 14 Jul 2020 05:05 AM PDT

Experts say the displacement of just the glacier would raise oceans .5 meters. Subsequent ice loss following could be up to 2 or even 3m of sea level rise. What would a .5 meter (or 2-3m) look like on coastal cities? Jus the beaches are gone or like 3 miles inland are under that much water

Article: Antarctic Glacier

submitted by /u/ASOIAFGymCoach73
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Of Sea Level - Is there a highest and lowest sea area on earth?

Posted: 14 Jul 2020 06:16 AM PDT

From a quick glance in wikipedia, I just learned that sea level is actually an average surface level of earth's bodies of water.

So I'm wondering if we know of certain seas or areas where it's particularly high or low? Perhaps on the poles or equator? Maybe a particular time of the year and with the right tides?

submitted by /u/ChildOfTheRevolution
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What makes a virus or bacteria harmful at molecular level?

Posted: 14 Jul 2020 02:38 AM PDT

How big would Earth’s inner core have to be for Earth to be habitable without a Sun?

Posted: 13 Jul 2020 10:18 AM PDT

Are plate tectonics just a theory?

Posted: 14 Jul 2020 07:00 AM PDT

I just heard plate tectonics referred to as a theory.

I always thought of it as something that was absolutely true & that earth's continents were definitely different billions of years ago (even though the exact shapes of those continents wouldn't be exact).

submitted by /u/iHateMyChode
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Why are viruses that result in a global pandemic so rare?

Posted: 13 Jul 2020 08:46 PM PDT

I might be misunderstanding how difficult it is to actually have a virus reach humans, but shouldn't pandemics happen more often given possible poor hygiene anywhere in the world? Doesn't it just take one person out of 8 billion to be incautious and start an outbreak?

submitted by /u/plzsendpuppypics
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Can a comet become a moon?

Posted: 13 Jul 2020 04:57 PM PDT

I know that a lot of small moons in the solar system are thought to be captured asteroids. Can a comet be captured by a planet in a similar fashion and become a moon of said planet? If so, would it still have a tail?

submitted by /u/ApteryxAustralis
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Why do we call things theories even after they've been proven?

Posted: 13 Jul 2020 01:05 PM PDT

I was talking to a friend about evolution and he said the inevitable "it's just a theory". To which I said "yes it is just like relativity is also a theory but has been proven". Then he asked me why it's called a theory and not a law. To which I said "I actually dont know". Let me find out for you. So why dont we call proven scientific theories laws?

submitted by /u/nodnarb314
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In comparison to fossil fuels, how much does the body heat of all the humans on Earth affect the global temperature?

Posted: 13 Jul 2020 02:24 PM PDT

If it's not a significant amount right now, will ever become a problem?

submitted by /u/UneducatedPerson
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How does moisture affect the molecular structure of plastics like Nylon and PET specifically?

Posted: 13 Jul 2020 01:00 PM PDT

I own a 3D printer, and have to keep my filament dry in order to print objects more successfully. "Wet" filament (filament that has absorbed a lot of moisture) tends to be more brittle in my experience, and dry filament seems to have more flexibility. I looked into why this was the case, and could only find answers akin to "It affects the molecular structure of the plastic, changing its properties." This isn't enough of an answer for me. I was hypothesizing that it is potentially similar to carbon in steel, where the carbon sits inside the iron's molecular structure and makes the crystals more rigid. More carbon = more rigid and brittle, whereas less carbon leads to a softer steel. Is it a similar process in plastic, or is there something else at play here? I appreciate any help with this issue!

submitted by /u/AIRTIME6898
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Why do some (?) nebulas conform to turbulent flow if their particles are few and far apart?

Posted: 13 Jul 2020 08:07 PM PDT

Why can't we predict with reasonable certainty the stability of theoretical elements?

Posted: 13 Jul 2020 09:04 AM PDT

From what I see, there's still a degree of uncertainty surrounding the proposed stability within the island of stability. Redditors on this sub don't seem to act with the kind of certainty you'd expect scientists to have protracted from what we already know about the components of atoms and the forces acting on them, at least it doesn't seem so to the layman like me.

Is it a matter of "good-taste" and etiquette that scientists don't disregard the IoS, or is it the case that there are factors (like sub-atomic particles and forces) acting on atoms which we haven't distinguished yet - or perhaps factors of uncertainty that I'm not aware of?

submitted by /u/FanticalZappy
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Why are FPGA’s less efficient than ASICs?

Posted: 13 Jul 2020 07:18 PM PDT

Like the title, is it because they have moving parts? And do the parts move electromagnetically?

submitted by /u/FakeNewsFlash
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How do scientists know where to look for fossils?

Posted: 13 Jul 2020 06:18 PM PDT

How does the body get rid off whiteheads naturally?

Posted: 13 Jul 2020 09:40 AM PDT