Is there a physiological basis to the change in food tastes/preferences as you grow up?

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• Is there a physiological basis to the change in food tastes/preferences as you grow up?
• AskScience AMA Series: I am Professor Beverley Hunt, OBE, an expert on Thrombosis and Haemostasis at King's College London. I will be answering all your questions about blood clots on World Patient Safety Day. Ask me anything!
• Why are only 151 cases of Covid-19 sufficient to demonstrate that Moderna's vaccine is 60% effective in a trial with 30,000 participants?
• Has climate change effected the migratory patterns of birds?
• How do antibiotics target harmful bacteria but not our own cells? What are the downsides of taking them even for mild problems?
• Is the decay of individual radioactive particles truly random, or is it based on factors too complex and convoluted to be accurately predicted on small scale?
• Why do earthquakes take place at a focus/epicenter instead of a plane or line?
• Why is Tornado Sky green?
• How does making vaccines more accessible to third-world countries slow population growth?
• Why is this me H1N1 strain in this year’s flu vaccine different between the egg grown vaccine and the cell-grown vaccine?
• What is the evidence for an early date of the emergence and diversification of primates?
• If you have the flu, does every exhale you take contain the flu virus?
• Do earthworms ever fall asleep?
• Why do similar energy orbitals interact stronger?
• How do we know there was a single common fish ancestor that got out of the water, and not several?
• How much does aero-braking ACTUALLY reduce delta-v costs for travel to/from Mars?
• Has the increased consumption of sparkling waters like La Croix caused a measurable uptick in carbon emissions?
• Why aren't we seeing an increase in CJD in the UK?
• How does COVID-19 affect animals?

Is there a physiological basis to the change in food tastes/preferences as you grow up? Posted: 17 Sep 2020 01:27 AM PDT I grew up despising the taste of coriander (cilantro to many). It tasted like soap and ruined food so I'd specifically request for it to be removed from any recipes at home or in restaurants where possible. Last week I tried it again and absolutely loved it. Feel like I've missed out this last 15 years or so. I wonder at what stage during that 15 year period I would've started to like it. Edit: I'm 25 years old if that has any relevance submitted by /u/RichardsonM24 [link] [comments]

AskScience AMA Series: I am Professor Beverley Hunt, OBE, an expert on Thrombosis and Haemostasis at King's College London. I will be answering all your questions about blood clots on World Patient Safety Day. Ask me anything! Posted: 17 Sep 2020 04:00 AM PDT I'm Prof. Beverley Hunt, OBE, Chair of the World Thrombosis Day (WTD) steering committee. I am also a professor of thrombosis and haemostasis at King's College in London, and a consultant at Guy's and St. Thomas' Hospitals. I am passionate about thrombotic and acquired bleeding disorders, and I was recently recognized as an Officer of the Most Excellence Order (OBE) of the British Empire in the Queen's Birthday 2019 Honours List for my work in the field. I am here to answer your questions about blood clots. I will be answering questions starting at 1:00pm EDT (17 UT), AMA! Proof Username: /u/WorldThrombosisDay submitted by /u/AskScienceModerator [link] [comments]

Why are only 151 cases of Covid-19 sufficient to demonstrate that Moderna's vaccine is 60% effective in a trial with 30,000 participants? Posted: 17 Sep 2020 07:42 AM PDT I read this article in the New York Times today. It mentions the different points at which they will analyze the data, but I don't understand how this conclusion can be reached from such a low number. submitted by /u/mylastnameandanumber [link] [comments]

Has climate change effected the migratory patterns of birds? Posted: 17 Sep 2020 05:31 AM PDT submitted by /u/MrTigeriffic [link] [comments]

How do antibiotics target harmful bacteria but not our own cells? What are the downsides of taking them even for mild problems? Posted: 17 Sep 2020 04:54 AM PDT submitted by /u/rdi2 [link] [comments]

Is the decay of individual radioactive particles truly random, or is it based on factors too complex and convoluted to be accurately predicted on small scale? Posted: 16 Sep 2020 08:59 PM PDT On a large scale, we can predict radioactive decay through half lives and other means, but all of these serve as estimations of the apparent "Random" decay of individual unstable particles. I have a difficult time comprehending how something can be truly "Random", so I wondered if this really was the case, or if its due to fluctuations and factors that we don't fully understand. That is to say - were we omniscient, could we predict the exact timing for the decay of individual particles? submitted by /u/Xenton [link] [comments]

Why do earthquakes take place at a focus/epicenter instead of a plane or line? Posted: 16 Sep 2020 09:26 PM PDT Paleo major in college, I just never got this. Why is the eq starting at a point instead of a plane? Wouldn't the earthquake move the whole block along the fault plane? submitted by /u/tbw875 [link] [comments]

Why is Tornado Sky green? Posted: 16 Sep 2020 11:44 PM PDT Why does the sky turn green before a tornado? submitted by /u/youngathanacius [link] [comments]

How does making vaccines more accessible to third-world countries slow population growth? Posted: 16 Sep 2020 11:33 PM PDT Is medicine the right flair here? Is this question better suited from Political Science, Psychology, or Biology? I apologize if the question is not the right fit. submitted by /u/IsXp [link] [comments]

Why is this me H1N1 strain in this year’s flu vaccine different between the egg grown vaccine and the cell-grown vaccine? Posted: 17 Sep 2020 01:21 AM PDT The CDC has announced the strains of flu that will be covered by this year's flu vaccine. I noticed that the A-H3N2 and B strains in the quadrivalent egg grown vaccine are identical to the ones in the the cell grown vaccine, the H1N1 strain is different. The egg based vaccine has A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus and the cell based vaccine has A/Hawaii/70/2019 (H1N1)pdm09-like virus. These have both been updated from last year's vaccines, in which both carried the same A/Kansas strain. So why are they different? And should someone try to get one over the other? submitted by /u/TychaBrahe [link] [comments]

What is the evidence for an early date of the emergence and diversification of primates? Posted: 16 Sep 2020 02:52 PM PDT About 12 years ago I took a class from Robert Martin. I remember him saying that most of the estimates for the first emergence of primates are much too late and that the real date is probably much earlier, maybe 80 or 90 MYA? Also that the major groups existed early too so that there were apes with tails existed a very long time ago. Maybe 60 or 70 MYA? Martin's main point as far as I can tell was just because the oldest fossil we can find is 40 million years old doesn't mean they didn't exist earlier. We talked about molecular, genetic and philological data but I don't remember the details. A hard drive failure means I lost all the pdfs of all the papers we read. Does anyone know of any scholarship or sources with ideas about the origin and diversification of primates other than stating how old the fossils we have are? submitted by /u/lohborn [link] [comments]

If you have the flu, does every exhale you take contain the flu virus? Posted: 16 Sep 2020 08:09 PM PDT I was talking to a friend and they were arguing that if you don't get the virus within 10 minutes being around someone, then you can't get the virus. I didn't think that was true though because 1.). I'm not inhaling every particle that the sick person is exhaling, so it could take longer than 10 minutes. 2.). Not every exhale that the sick person exhales contains the virus particles/amount of virus particles. But I'm not sure if these are actual facts or not, hopefully someone can give me more insight, thank you. submitted by /u/jzhang172 [link] [comments]

Do earthworms ever fall asleep? Posted: 16 Sep 2020 05:33 PM PDT From what I (very briefly) reviewed, it seems this is kind of up in the air due to their not so complex nervous system. Just seeing if anyone would be able to give a more confident answer if earthworms actually do fall asleep. submitted by /u/SEMPER_SAPIDUM [link] [comments]

Why do similar energy orbitals interact stronger? Posted: 17 Sep 2020 03:07 AM PDT submitted by /u/boop47 [link] [comments]

How do we know there was a single common fish ancestor that got out of the water, and not several? Posted: 16 Sep 2020 03:22 PM PDT How do we know it was just one, and not several of them in different situations? That would explain the different evolutional trees occurring. submitted by /u/BNVDES [link] [comments]

How much does aero-braking ACTUALLY reduce delta-v costs for travel to/from Mars? Posted: 16 Sep 2020 02:50 PM PDT Hey r/askscience! I have seen quite a few delta-v maps like this lovely one right here. All of these show that aero-braking is an option available to reduce the delta-v requirements on the flight to/from mars and earth. How much do these aero-braking maneuvers actually reduce delta-v requirements? I assume the answer will be along the lines of "depends", but I was looking for a ballpark estimate. Thanks for your help and information! submitted by /u/NGSensibleSolutions [link] [comments]

Has the increased consumption of sparkling waters like La Croix caused a measurable uptick in carbon emissions? Posted: 16 Sep 2020 12:57 PM PDT submitted by /u/slooots [link] [comments]

Why aren't we seeing an increase in CJD in the UK? Posted: 16 Sep 2020 02:13 PM PDT I've had surgery three times and just been reading about prion diseases and how prions can persist on sterilised equipment and be potentially infections. I'm worrying about what the risks are to me - and the general UK population - of having contracted a prion disease through surgery or eating cow parts in the 90's. If we did eat mad-cows, wouldn't we be seeing CJD/BSE appearing in the population by now, or is it still too soon? submitted by /u/eldrichride [link] [comments]

How does COVID-19 affect animals? Posted: 16 Sep 2020 08:22 AM PDT What kind of symptoms do animals, who catch it, have? Like the bat(I think it originally came from) that had it first. Are they just asymptomatic carriers or can they get sick (animals in general). Sorry if it's confusing. I got so many questions that are somehow related and have no idea how to word them all. submitted by /u/yxcvbnmlk [link] [comments]

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Did Neanderthals make the cave paintings ?

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• Did Neanderthals make the cave paintings ?
• AskScience AMA Series: We have hints of life on Venus. Ask Us Anything!
• Why isn't the rabies virus extinct, since the carrier dies so quickly after the clinical symptoms?
• How can we know the 'long term' effects of COVID-19 if we have not had it for a long period yet?
• Is it possible for a species to have an evolutionary trait that wasn't a result of survival of the fittest? Essentially just a trait that tagged along for the ride as the generations went on?
• Is there a correlation between 1 cal = 4.184 J and water’s heat capacity of 4.184 J/g°C?
• How if you jump inside a train you land in the same spot but when your on top of a train you land in a different spot?
• How are chip manufacturers getting around quantum tunneling in the manufacturing of smaller than 7nm sized chips?
• Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
• If you are in a 300 AQI area for 5 hours vs a 150 AQI area for 10 hours, are they the same level of harm?
• Do vaccines apply environmental pressures creating more robust viruses?
• The moon has such a gravitational effect on tides, why aren't the leaves on plants pulled upwards at night? or are they?
• Given Cherenkov radiation, is there a possibility that cause and effect can be reversed?
• Is drift velocity of electrons constant for a given conductor at a particular temperature?
• What does this answer for the integration of sqrt{1+x^3} mean?
• How would the damage of dropping Everest as if it werea bomb compare to nukes?
• What happens to mosquitos in winter?
• Which MHC Class Presents Intracellular Bacteria?

Did Neanderthals make the cave paintings ? Posted: 15 Sep 2020 06:53 PM PDT In 2018, Dirk Hoffmann et al. published a Uranium-Thorium dating of cave art in three caves in Spain, claiming the paintings are 65k years old. This predates modern humans that arrived in europe somewhere at 40k years ago, making this the first solid evidence of Neanderthal symbolism. Paper DOI. Widely covered, EurekAlert link This of course was not universally well received. Latest critique of this: 2020, team led by Randall White responds, by questioning dating methodology. Still no archaeological evidence that Neanderthals created Iberian cave art. DOI. Covered in ScienceNews Hoffmann responds to above ( and not for the first time ) Response to White et al.'s reply: 'Still no archaeological evidence that Neanderthals created Iberian cave art' DOI Earlier responses to various critiques, 2018 to Slimak et al. and 2019 to Aubert et al. 2020, Edwige Pons-Branchu et al. questining the U-Th dating, and proposing a more robust framework DOI U-series dating at Nerja cave reveal open system. Questioning the Neanderthal origin of Spanish rock art covered in EurekAlert Needless to say, this seems quite controversial and far from settled. The tone in the critique and response letters is quite scathing in places, this whole thing seems to have ruffled quite a few feathers. What are the takes on this ? Are the dating methods unreliable and these paintings were indeed made more recently ? Are there any strong reasons to doubt that Neanderthals indeed painted these things ? Note that this all is in the recent evidence of Neanderthals being able to make fire, being able to create and use adhesives from birch tar, and make strings. There might be case to be made for Neanderthals being far smarter than they've been usually credited with. submitted by /u/savuporo [link] [comments]

AskScience AMA Series: We have hints of life on Venus. Ask Us Anything! Posted: 16 Sep 2020 04:00 AM PDT An international team of astronomers, including researchers from the UK, US and Japan, has found a rare molecule - phosphine - in the clouds of Venus. On Earth, this gas is only made industrially or by microbes that thrive in oxygen-free environments. Astronomers have speculated for decades that high clouds on Venus could offer a home for microbes - floating free of the scorching surface but needing to tolerate very high acidity. The detection of phosphine could point to such extra-terrestrial "aerial" life as astronomers have ruled out all other known natural mechanisms for its origin. Signs of phosphine were first spotted in observations from the James Clerk Maxwell Telescope (JCMT), operated by the East Asian Observatory, in Hawai'i. Astronomers then confirmed the discovery using the more-sensitive Atacama Large Millimeter/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner. Both facilities observed Venus at a wavelength of about 1 millimetre, much longer than the human eye can see - only telescopes at high altitude can detect it effectively. Details on the discovery can be read here: https://www.eso.org/public/news/eso2015/ We are a group of researchers who have been involved in this result and experts from the facilities used for this discovery. We will be available on Wednesday, 16 September, starting with 16:00 UTC, 18:00 CEST (Central European Summer Time), 12:00 EDT (Eastern Daylight Time). Ask Us Anything! Guests: Dr. William Bains, Astrobiologist and Biochemist, Research Affiliate, MIT. u/WB_oligomath Dr. Emily Drabek-Maunder, Astronomer and Senior Manager of Public Astronomy, Royal Observatory Greenwich and Cardiff University. u/EDrabekMaunder Dr. Helen Jane Fraser, The Open University. u/helens_astrochick Suzanna Randall, the European Southern Observatory (ESO). u/astrosuzanna Dr. Sukrit Ranjan, CIERA Postdoctoral Fellow, Northwestern University; former SCOL Postdoctoral Fellow, MIT. u/1998_FA75 Paul Brandon Rimmer, Simons Senior Fellow, University of Cambridge and MRC-LMB. u/paul-b-rimmer Dr. Clara Sousa-Silva, Molecular Astrophysicist, MIT. u/DrPhosphine submitted by /u/AskScienceModerator [link] [comments]

Why isn't the rabies virus extinct, since the carrier dies so quickly after the clinical symptoms? Posted: 16 Sep 2020 05:59 AM PDT submitted by /u/Soothly22 [link] [comments]

How can we know the 'long term' effects of COVID-19 if we have not had it for a long period yet? Posted: 16 Sep 2020 03:27 AM PDT submitted by /u/StopHavingAnOpinion [link] [comments]

Is it possible for a species to have an evolutionary trait that wasn't a result of survival of the fittest? Essentially just a trait that tagged along for the ride as the generations went on? Posted: 16 Sep 2020 04:47 AM PDT submitted by /u/Etzello [link] [comments]

Is there a correlation between 1 cal = 4.184 J and water’s heat capacity of 4.184 J/g°C? Posted: 15 Sep 2020 02:20 PM PDT I'm in an online introduction class to chemistry. Today's lesson covered energy, temperature, heat capacity and such. There was one part of the lesson that said 1 calorie is equal 4.184 joules. Later in the lesson there was a part that said water's heat capacity is 4.184 J/g°C. I noticed that numbers were the same between the two. No where in the lesson did it address this similarity. So I was wondering if there's a reason that these numbers are the same or if some there is some kind of correlation out side of having joule as part of the measurement? Or is this just coincidence? submitted by /u/Doeyjoe [link] [comments]

How if you jump inside a train you land in the same spot but when your on top of a train you land in a different spot? Posted: 16 Sep 2020 02:04 AM PDT submitted by /u/wowcucumber [link] [comments]

How are chip manufacturers getting around quantum tunneling in the manufacturing of smaller than 7nm sized chips? Posted: 15 Sep 2020 03:09 PM PDT So we all know that quantum tunneling was going to be an issue down at the smallest transistor size levels, where 7nm was claimed to be the absolute limit. But now I'm seeing 7nm processes everywhere in my phone, in the CPU I'm using in my machine, and from what I'm reading Samsung and TSMC have manufactured 5nm process chips and are planning manufacturing of 3nm chips (the next size down). How are they getting around QT and how does this affect what is seen on screen? submitted by /u/LurkerPatrol [link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 16 Sep 2020 08:08 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science 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]

If you are in a 300 AQI area for 5 hours vs a 150 AQI area for 10 hours, are they the same level of harm? Posted: 15 Sep 2020 07:13 PM PDT Mathematically, it makes sense that you'd be breathing in the same amount of particles given the two periods of time. I was wondering if this was similar to how the liver functions when responding to alcohol. (There is less harm done if you were to drink 1 beer for a month vs if you drank a months worth of beer in 1 day.) submitted by /u/Moms_Linguini [link] [comments]

Do vaccines apply environmental pressures creating more robust viruses? Posted: 15 Sep 2020 09:34 PM PDT Please forgive the obviously contentious question. It's not my goal in the least to give those that would deny science ammunition. I've been a member here for better than a decade, with this account going back four years. My history is there for any to view, I'm not an instigator, I'm not a shill, I'm not a science denier. On the contrary I'd like to consider myself to be highly critical and objective in most things. I ask this question with a legitimate curioursity, and there is a level of concern I feel regarding Covid because of it. Sorry for the long preamble, but I'd really like this question to have an opportunity to be answered by someone with expert knowledge and objective perspective. I would ask that those that do not know please refrain from speculating. I don't want this to devolve into a game of hearsay and finger pointing. It's my understanding that the medical community in particular have been facing a troubling trend over the past decade or so. That of highly resistant strains of bacteria. MRSA. I've been led to believe that the cause of this is the over prescription of antibiotics and the bacteria's direct evolutionary response in overcoming these methods of defense. Is it appropriate to talk about viruses in the same manner? I understand they will also go through stages of rapid mutation and that environmental pressures, including vaccines, create a survival of the fittest arena, in which those that continue to survive and procreate naturally evolve to become more resistant and or more virulent. Is that a fair assessment? Is there objective evidence that shows how influenza has reacted to the past 50 years of vaccination? If so, has it created a more robust virus because of it? If that is also the case, should we have concerns about introducing a vaccination for Covid that could have the unintended consequences of creating a more robust virus in the same way? Again, I apologize for the inflammatory question. It is however a legitimate question. I'm not a troll, and I have the history to show that. I'm not an anti-vaxxer or science denier. I just think that if my understanding, which I will freely admit could be entirely inaccurate, holds true; These are concerning questions. Thank for any time or consideration, and again, I politely and with the utmost respect to everyone in this community ask that if you do not have objective evidence to back your answers, please refrain from speculation. submitted by /u/a4mula [link] [comments]

The moon has such a gravitational effect on tides, why aren't the leaves on plants pulled upwards at night? or are they? Posted: 16 Sep 2020 04:54 AM PDT i noticed my fig tree's leaves seem to be pulled upwards some in the middle of the night and i wondered about this question. edit: although they might just be new leaves that haven't grown in fully yet. submitted by /u/donaldtrumpshearts [link] [comments]

Given Cherenkov radiation, is there a possibility that cause and effect can be reversed? Posted: 16 Sep 2020 12:15 AM PDT Please bear with me and my rough understanding. Light carries the information that something happened and its effects into the future. The common wisdom states that if something travels faster than the speed of light, it's effectively travelling into the past. So this (and only this /s) is the reason that things can't travel faster than the speed of light in a vacuum. However, given that the speed of light in a non vacuum medium can be exceeded by other particles in the right conditions, would it be right to say that these particles are traveling to the past and hence reversing cause and effect behaviours? submitted by /u/boki3141 [link] [comments]

Is drift velocity of electrons constant for a given conductor at a particular temperature? Posted: 15 Sep 2020 08:23 AM PDT submitted by /u/looneytoes [link] [comments]

What does this answer for the integration of sqrt{1+x^3} mean? Posted: 16 Sep 2020 01:48 AM PDT So I'm using the sympy library in Python, and I wanted to see the result for the integration of sqrt{1+x^3}. The answer I got was this . I only recognize the Gamma Function notation in this expression, but I don't know how I can evaluate this. What does the F_1( ) represent? Some observations: I tried using limits as (0,3) in this integral, and got a real valued answer . The intergration for sqrt{1+x^k} is this, which is pretty neat! submitted by /u/RAyLV [link] [comments]

How would the damage of dropping Everest as if it werea bomb compare to nukes? Posted: 15 Sep 2020 11:44 PM PDT this image is the inspiration for this post submitted by /u/snt271 [link] [comments]

What happens to mosquitos in winter? Posted: 15 Sep 2020 08:48 AM PDT First off, I hate mosquitos! But what happens to them when it's cold and the bugs are mostly gone? Do they just hibernate or something like that? submitted by /u/9herrick [link] [comments]

Which MHC Class Presents Intracellular Bacteria? Posted: 15 Sep 2020 04:35 PM PDT I understand that MHC Class I displays intracellular peptides broken down and MHC Class II presents broken down extracellular components. However, it seems like intracellular bacteria (i.e. M.Tuberculosis) falls in the middle. Which MHC Class is responsible for these? Thank you! submitted by /u/academicmasochist99 [link] [comments]

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AskScience AMA Series: I'm a disaster researcher and scientist for fiction with irrepressible curiosity about our wonderfully weird universe. AMA!

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• AskScience AMA Series: I'm a disaster researcher and scientist for fiction with irrepressible curiosity about our wonderfully weird universe. AMA!
• Does any species have a symbiosis with viruses?
• What quantity would be conserved if physics were T symmetric?
• How does our body determine it needs X amount of energy and how much it need to pull from fat cells?
• Does 2s orbital shield the 1s to a certain extend?
• To what extent is the severity of the western USA's forest fires caused by Climate Change?
• What’s the relationship between degrees kelvin and the speed of atoms? Is it linear or otherwise? and will a certain speed of an atom correspond to a certain temperature or does the speed differ by element?
• If the spin of a proton is 1/2, why is it said that the combined spins of its three quarks do not add up to the proton's total spin?
• Why do patients who were previously vaccinated against rabies need additional doses upon future exposure?
• What is the physiological manifestation of the q and s wave on an ECG?
• How would an electrically charged particle like an electron interact with a magnetic monopole?
• Why do isomers have different heats of combustion?
• How do secure phones like the ones that governments use work to send secure communications?
• How are new proteins discovered?

AskScience AMA Series: I'm a disaster researcher and scientist for fiction with irrepressible curiosity about our wonderfully weird universe. AMA! Posted: 15 Sep 2020 04:00 AM PDT Academically, I'm a physicist and geophysicist specializing in disasters-tsunami, earthquakes, asteroid impacts-pretty much all the heart-pounding, doom-riddled science. Practically speaking, I give tasting notes on rocks, tweak party planning to enhance disaster preparedness, and spend way too much time talking about doom. My work involves everything from figuring out landslides on asteroids for Project ESPRESSO to scrawling equations and establishing plausibility for fiction like Stargate and Star Trek. I'm also a science writer, with bylines in Wired, io9, Popular Science, Vox, and more. I share my press passes (and social media) with a bevy of mischievous plush creatures. Science links: Project ESPRESSO: https://www.espresso.institute/ SETI Institute: https://seti.org/ Social media links: Twitter: www.twitter.com/mikamckinnon Instagram: https://www.instagram.com/mika.mckinnon Facebook: https://www.facebook.com/mika.mckinnon IMDb: https://www.imdb.com/name/nm8802986 I'll see everyone at 10am PT (1 PM ET, 17 UT), AMA! Username: /u/setiinstitute submitted by /u/AskScienceModerator [link] [comments]

Does any species have a symbiosis with viruses? Posted: 14 Sep 2020 02:53 PM PDT Many species including humans have formed symbiosis with some other lifeform. One example being humans and gut bacteria. Does any species have a symbiosis with viruses? And if so, how does it work? And if not, why are viruses so special in this regard? Thanks in advance! submitted by /u/spaceguy747 [link] [comments]

What quantity would be conserved if physics were T symmetric? Posted: 15 Sep 2020 05:31 AM PDT I understand that T translation invariance leads to conservation of energy, but presumably this is not the same thing as invariance under T reversal, just as space-translation-invariance is not the same as P symmetry. So, if the laws of physics were invariant under T reversal, what would be the corresponding conserved quantity? submitted by /u/King_of_Men [link] [comments]

How does our body determine it needs X amount of energy and how much it need to pull from fat cells? Posted: 15 Sep 2020 01:31 AM PDT So like the title says. How is this determined, for example when will the body know it needs X amount of energy to be pulled from the fatcells into the blood stream? Also bonus questions, what happens if your body where to pull too much energy into the blood stream? submitted by /u/mobani [link] [comments]

Does 2s orbital shield the 1s to a certain extend? Posted: 15 Sep 2020 05:05 AM PDT To what I have seen, the wavefunction allows 2s electrons to be closer to the nucleus then 1s. Do I think correctly and it provides some shielding or am I misunderstanding how wavefunction work and the 1s experience the full charge of the nucleus as the effective nuclear charge? submitted by /u/boop47 [link] [comments]

To what extent is the severity of the western USA's forest fires caused by Climate Change? Posted: 15 Sep 2020 01:58 AM PDT I understand that the initial blazes were caused by severe lightning (also climate change?) but in what way is it worse due to climate change? US politicians who feel the need to get people to "believe in" climate change point to the fires as a symptom of climate change, but to what extent is that accurate, scientifically speaking? (I am not asking for proof of Climate Change itself, given that there appears to be ample evidence for it, and it is the current consensus among experts.) submitted by /u/NotAWriterIRL [link] [comments]

What’s the relationship between degrees kelvin and the speed of atoms? Is it linear or otherwise? and will a certain speed of an atom correspond to a certain temperature or does the speed differ by element? Posted: 15 Sep 2020 06:07 AM PDT submitted by /u/jameslegohanlon [link] [comments]

If the spin of a proton is 1/2, why is it said that the combined spins of its three quarks do not add up to the proton's total spin? Posted: 15 Sep 2020 07:33 AM PDT I have been trying to teach myself some of the basics of quantum mechanics and am running into the formation of the idea behind spin. I know photons and electrons can have spin, and since quarks are fermions, they carry spin in increments of ħ/2 . Since a proton is made up of three quarks, and the spin of a proton is 1/2, I assumed the three quarks' spins would add up in such a way that two of the quarks spins cancel each other out(1/2-1/2), and the third quark's spin (1/2). It has been discovered, however, that the spin of the quarks contributes very little to the spin of the proton (called the proton spin crisis) and that the proton gets the majority of its spin from somewhere else, but I am confused by this because the spin of a proton has been measured to be 1/2? If the net spin of the three quarks is 1/2, doesn't that completely account for the magnitude of spin in the proton? If quarks have spin 1/2 and a proton has a spin of 1/2, why is it said the quarks only contribute 5-25% of the total spin of the proton, which is equal? submitted by /u/Watch45 [link] [comments]

Why do patients who were previously vaccinated against rabies need additional doses upon future exposure? Posted: 15 Sep 2020 02:16 AM PDT Hello. I've got a question about vaccination against rabies. Why is it that those who have been vaccinated previously have to receive an additional two doses if they are exposed in the future? I get why someone would probably be better off getting booster doses if they were vaccinated, say, 15 years ago and got exposed again. But why is it that if someone got exposed only, say, a year after being vaccinated, needs to get additional doses? Wouldn't the previous vaccine be enough, as the patient would still have a high level of antibodies? Or is this just a just-in-case protocol, seeing as the virus is so deadly? Is it likely that the patient would still be protected if they received pre-exposure prophylaxis, got exposed a year later, and didn't get booster doses? submitted by /u/phantom_lord_yeah [link] [comments]

What is the physiological manifestation of the q and s wave on an ECG? Posted: 15 Sep 2020 12:39 AM PDT So the r wave is ventricular repolarization, but what does the previous small deflection and post deflection waves indicate physiologically in the heart? submitted by /u/robertchu123 [link] [comments]

How would an electrically charged particle like an electron interact with a magnetic monopole? Posted: 14 Sep 2020 11:07 PM PDT It's fairly widely known that, if matter and antimatter were to come into contact, they would be annihilated by one another and release their mass energy. It's also fairly widely known there is no conclusive evidence proving that magnetic monopoles exist. However, there is a question as to why there is more matter than antimatter in the universe, and because matter and antimatter annihilate one another, eventually the one for which there was a greater amount would eventually become the only type remaining. The inspiration for this question is that perhaps the same sort of thing happened to magnetic monopoles- maybe they were all annihilated by electrically charged particles? So, what would happen to a magnetic monopole if it came into contact with, say, an electron? What would happen if it were nearby? Would the polarity of the monopole play into this? submitted by /u/doublesigned [link] [comments]

Why do isomers have different heats of combustion? Posted: 14 Sep 2020 07:58 PM PDT Particularly butan-1-ol, butan-2-ol and 2-methylpropan-2-ol, with butan-1-ol having the greatest and 2-methylpropan-2-ol having the lowest. submitted by /u/NormanConquest_ [link] [comments]

How do secure phones like the ones that governments use work to send secure communications? Posted: 14 Sep 2020 07:55 AM PDT submitted by /u/KeepWatchingOverMe [link] [comments]

How are new proteins discovered? Posted: 14 Sep 2020 07:58 AM PDT I am familiar with methods to test for proteins that we already know about, and have sequenced, but how do you find proteins that no one has ever found before? Can it be done with a western blot? Any papers on the subject? submitted by /u/blondeleather [link] [comments]

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