Pages

Thursday, August 26, 2021

Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2?

Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2?


Studies from 2003 in China, showed that 80% of the wild animals in the markets and 13-60% of traders with wild animals had SARS-Cov-1 antibodies indicating of larger spreading of the virus. Do we have similar early studies for SARS-Cov-2?

Posted: 25 Aug 2021 12:04 PM PDT

https://pubmed.ncbi.nlm.nih.gov/15061910/ https://pubmed.ncbi.nlm.nih.gov/14561956/ https://pubmed.ncbi.nlm.nih.gov/15663874/

According to my limited understanding, this indicates that SARS-1 was spreading undetected earlier in those risk groups and had a chance to mutate.

I can't find such studies for SARS-COV-2. Are there any?

submitted by /u/2000p
[link] [comments]

Why is gravity stronger in the ocean than on land?

Posted: 26 Aug 2021 03:50 AM PDT

This gravitational anomaly map shows that all of the oceans have more gravity than all of land. Is this because land is more elevated? Water is less dense than rock, so I would have assumed it would be the other way around.

submitted by /u/997
[link] [comments]

Does the moon, other planets experience earthquake?

Posted: 25 Aug 2021 10:35 PM PDT

Someone asked a question in r/moon whether there are earthquakes on the moon and it made me wonder do other planets (it's moons also?) experience earthquakes?

submitted by /u/aus_sidney
[link] [comments]

Does antibody response adapt with exposure to different Covid strains?

Posted: 26 Aug 2021 05:52 AM PDT

If you recieved a Covid-19 vaccine, the vaccine generated antibody and T-cells to equip the immune system to respond to the alpha Covid-19 virus. In the case of the mRNA vaccines, it was really primed just toward the spike protein. If you are vaccinated and are exposed to a variant such as Delta, I understand that current vaccines have a high probability of attenuating illness. When this occurs, does your antibody response further adapt to be more efficient in warding off that variant in future exposures, or if it is good enough to work, does it remain unchanged? What exactly does or does not change?

submitted by /u/rockjones
[link] [comments]

Can volcanoes appear in cold areas of the world, and can they be a source of heat in any practical way?

Posted: 25 Aug 2021 07:03 PM PDT

Like a volcano in a cold country, would the volcano be warmer than the ground around it? I understand that when it erupts there would be a lot of heat lol

submitted by /u/SleepyinStardew
[link] [comments]

How long is the COVID-19 incubation period for vaccinated people?

Posted: 25 Aug 2021 10:13 PM PDT

Is it the same as unvaccinated people? I thought it might be shorter because of a faster immune response. I couldn't find any info about this.

submitted by /u/monsieurpooh
[link] [comments]

How do traits that don't give a species an advantage become a normal trait through evolution and the concept of survival of the fittest?

Posted: 25 Aug 2021 04:51 PM PDT

If I understand the "survival of the fittest" concept, random mutations occur causing a change in a species. Sometimes, those random mutations lead to a change that gives that species an advantage. That advantage allows that species to thrive and outlive other's of its kind. It provides offspring which is more likely to be born with that new trait as well. Over time, that species with that new trait becomes the "new normal". Simply put of course.

All that said, if this is accurate, how do random mutations that don't really provide an advantage also become a "new normal"?

For example (this is the specific topic that got me wondering about this, so if anyone can also address this specific example, it would be much appreciated!): Humans crying when they are sad. From what I have read, it is mostly believed that the purpose of this is simply to signal our emotions to others. I am having a hard time understanding how something like this becomes a normal trait. How did this give humans an advantage that helped to out last humans other humans that did not produce tears or the other physical actions/expressions that crying produces?

There are of course many other examples of this. I am sure there is a simple answer. Can any of you more enlightened on the subject than I help me understand this, or what I am not understanding correctly about evolution/SOTF?

submitted by /u/mostlyalurk
[link] [comments]

Why Tuberculosis is still a major death cause if we have the vaccine?

Posted: 25 Aug 2021 10:46 AM PDT

I'm not an anti Vaxxer, without any doubt, but i don't understand, why are there so many deaths every year 1,4M in 2019) because of a disease that has a vaccine since almost 100 Years? Thanks!

submitted by /u/Cobeeee
[link] [comments]

Is it possible to have high inflammation and low C-reactive protein?

Posted: 25 Aug 2021 11:04 AM PDT

Or low inflammation and high CRP? Is CRP really *that* great of an inflammation marker?

submitted by /u/inquilinekea
[link] [comments]

Is it known if Covid is able to infect through the eyes?

Posted: 25 Aug 2021 02:38 PM PDT

How do plasmid vaccines work?

Posted: 25 Aug 2021 02:04 PM PDT

Specifically, how does the plasmid enter cells and what prompts the body to start expressing proteins from foreign DNA instead of trying to get rid of the foreign material?

submitted by /u/nootfiend69
[link] [comments]

What do non-integer orbital occupation values mean?

Posted: 25 Aug 2021 07:13 PM PDT

computational chemistry can often spit out molecule structures that have decimal values in the calculated number of electrons occupying an orbital.

What does this actually MEAN? Is it saying that an individual molecule is in some kind of "resonance" hybrid between two or more electron configurations? Or is it saying that in a sample of many molecules, those values are the *average* occupancies, but any given single molecule in the sample has either 0, 1 or 2 electrons in any given orbital?

submitted by /u/SMM-123Sam
[link] [comments]

Why are engines with more cylinders less efficient assuming the displacement + bore/stroke ratio are the same?

Posted: 25 Aug 2021 09:15 AM PDT

Why do we use latin and greek root words for scientific vocabulary?

Posted: 25 Aug 2021 09:23 AM PDT

Is it mostly a historical reason? Are there significant pragmatic reasons?

submitted by /u/passed_tense
[link] [comments]

Wednesday, August 25, 2021

AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals!

AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals!


AskScience AMA Series: Hi, Reddit! I'm a critical care-related researcher, professor of medicine and doctor in the ICU. AMA about wellness, burnout and PTSD in healthcare professionals!

Posted: 25 Aug 2021 04:00 AM PDT

Hello, Redditors! My name is Marc Moss, and for the last 20 years, I have been studying the effects of stress on critical care nurses and other healthcare professionals.

I'm also a professor of medicine at the University of Colorado Anschutz Medical Campus, Head of the Division of Pulmonary Sciences and Critical Care Medicine at the University of Colorado School of Medicine and work as a critical care doctor.

Earlier this year, my colleague Dr. Meredith Mealer and I were honored to receive the American Association of Critical Care Nurses (AACN) Pioneering Spirit Award for our work studying the effects of stress on nurses and creating interventions to increase resilience among healthcare workers.

Among these interventions includes work at the Colorado Resiliency Arts Lab, a research consortium supported by the National Endowment for the Arts. We are striving to create a vibrant, collaborative creative arts therapy community that is committed to enhancing healthcare professional well-being and alleviating psychological stress in the workplace and beyond.

While I've been studying healthcare-related burnout for many years, this last year and a half during the COVID-19 pandemic has been a war zone for our healthcare professionals. I have never been prouder of all of my colleagues and the amazing hospital employees that we work with on a daily basis. They are working long hours in difficult conditions, putting on and taking off protective equipment, while trying not to get sick themselves, or infect their families and children. You would be honored to witness their extraordinary and relentless efforts to care for our sickest patients. However the relentless stress is taking its toll on all of us. I am afraid that the next wave will "break our souls".

In addition to critical care-related research, my research interests include identifying new treatment modalities for patients with the Acute Respiratory Distress Syndrome (ARDS) and exploring the diagnosis and treatment of neuromuscular dysfunction in critically ill patients who require mechanical ventilation.

I will be on at 1pm ET (17 UT) to answer your questions, AMA!

Additional Background:

  • Head of the Division of Pulmonary Sciences and Critical Care Medicine at the CU Anschutz School of Medicine
  • Program Director for the Education, Training, and Career Development Core of the Colorado Clinical Translational Sciences Institute (CCTSI) from 2008-2016
  • President of the American Thoracic Society from 2017-2018

Research Publications:

Additional Information About My Work:

Username: /u/drmarcmoss

submitted by /u/AskScienceModerator
[link] [comments]

How is the effectiveness of the vaccines ''waning''? Does your body just forget how to fight COVID? Does Delta kill all the cells that know how to deal with it?

Posted: 25 Aug 2021 04:47 AM PDT

It's been bothering me and I just don't understand how it's rendering the vaccines ineffective and yet it reduces the symptoms of it still.

submitted by /u/Pretty-Ad-1757
[link] [comments]

Why are there so many islands between Canada and Greenland? What natural process occurred to make that land formation?

Posted: 24 Aug 2021 09:03 PM PDT

Since Titans atmosphere is mostly methane, what prevents the whole moon from detonating when hit by a meteor?

Posted: 24 Aug 2021 07:54 PM PDT

Is it only the lack of oxygen in the atmosphere? What if a comet with a high quantity of frozen oxygen were to impact Titan at high velocity? Basically what's the easiest way to detonate all that gas on Titan? Is it even possible?

submitted by /u/Hannover2k
[link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science

Posted: 25 Aug 2021 07:00 AM PDT

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer 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]

Why is the Strait of Gibraltar so much deeper than the area surrounding it?

Posted: 24 Aug 2021 08:43 PM PDT

I couldn't find a reliable answer online and I am not sure if this counts as science, but I'm curious to why the Strait of Gibraltar is so deep in such a specific spot in the world.

submitted by /u/NickElf977
[link] [comments]

Why don't we just digest harmful bacteria like salmonella instead of getting sick?

Posted: 25 Aug 2021 06:31 AM PDT

Salmonellosis is from bacteria. Bacteria are built from some of the same basic components as multicellular organisms, which we break down with specialized enzymes along the digestive tract. But ingesting these bacteria, our body seems to just allow them to get to work instead. How is this?

submitted by /u/poop_if_i_want_to
[link] [comments]

Is the microbiome of one ear significantly different from the other?

Posted: 24 Aug 2021 08:21 PM PDT

Sometimes I'm guilty of using q-tips. Is there every a chance of cross contamination between ears?

submitted by /u/windupalarm
[link] [comments]

Was Edward Jenner’s vaccine better than variolation?

Posted: 25 Aug 2021 05:52 AM PDT

If centrifugal force is a virtual force, then how does it cause any change?

Posted: 25 Aug 2021 07:43 AM PDT

Hi I'm a high school (age - 15) student, and recently I learned that centrifugal force doesn't really exist and it's just assumed by the observer. But we were taught that centrifuge works on the principle of centrifugal force and also that earth bulges at centre and it flattened at poles due to the action of this force. But if it does not exist, how do these changes occur? It would be really great if you use simple terms because I don't think I'm very well versed in physics and neither much acquainted with technical terms.

submitted by /u/fuckwhyamInotcool
[link] [comments]

How did plants grow during the 2 million years of rain (aka carnian pluvial event)? Would the photosynthesis process have been affected by the clouds or is that stupid?

Posted: 24 Aug 2021 08:37 PM PDT

please help

submitted by /u/sundeliska
[link] [comments]

How long are waves far out at sea?

Posted: 24 Aug 2021 06:48 PM PDT

I always hear a lot about the height of waves. I've also just come to know about 'rouge waves' , which blew my mind a bit. But how far can/do they stretch? Is it the entire length of the ocean or am I being stupid?

submitted by /u/RoryFw
[link] [comments]

Is Focus/attentiveness measurable? If so how?

Posted: 25 Aug 2021 04:50 AM PDT

If two people are working on the same task, and person 1 is thinking about food/naked women/drugs etc while working. And person 2 is fully engaged in the task. Not even noticing other people in the room.

submitted by /u/Sonnycrocketto
[link] [comments]

What was Mars like during periods of high tilt?

Posted: 24 Aug 2021 03:13 PM PDT

I've heard a bit about how high tilt on Mars probably caused the loss of polar ice caps and the accumulation of ice near the equator. What would Mars have been like in these periods, in terms of weather, atmospheric density, and just overall appearance? How frequently do periods of high tilt occur and when was the most recent one?

submitted by /u/atomfullerene
[link] [comments]

Does the type of sand matter for glass production?

Posted: 24 Aug 2021 11:55 PM PDT

Read a report that if not for plastic-glass hybrid vials, we nearly didn't manage to mass produce vaccines in such a short time.

I understand not all sand are created equal, for example, dessert sand is smooth hence not suitable for construction. Construction requires rougher/angular sand from rivers etc.

Controlling for variables like shipping bottlenecks and time it takes to start glass manufacturing facilities, it shouldn't matter what type of sand is used for glass production right? I am thinking glass production requires the melting of sand that changes it on a molecular level, hence the shape of the sand on the microscopic level shouldn't be a limiting factor.

Am i right? Or am I missing something?

Edit: this is the excerpt from an article that got me thinking about this:

"Part of the problem is that glass manufacturing facilities are expensive to build. Then, there can be challenges with obtaining the needed key raw material — a particular kind of angular sand found in riverbeds and beaches that's in high demand around the world for a number of products."

submitted by /u/chickensmitten
[link] [comments]

What if the human body doesn't have any T cell that can bind to a particular antigen?

Posted: 24 Aug 2021 11:54 AM PDT

So T cells develop in the thymus during childhood where the antigen binding receptors on them are tested in positive and negative selection so that they don't hurt the body. After the thymus effectively stops working (not completely) you are effectively stuck with the antigen binding receptors from your childhood. We know in order to activate an adaptive response of the immune system T cells need to activate B cells. But if you have a pathogen that doesn't have an antigen which your childhood setup of T cells can bind to then no T cells are activated and therefore no B cells which means there is no antibody production and hence no adaptive immune response??

Would you die then?

Is this why so many people die to the flu virus?

Is there a way for the body to circumvent this?

Is that the reason for why some people have faster adaptive immune responses to certain viruses and therefore have a higher chance of survival? While the people that by random chance had fewer T cells which could recognize this particular antigen and therefore the chance that these T cells would be in a lymph node further away from the first antigen presenting cells would therefore have to wait a longer period for the antigen presenting cells to reach the T cells and therefore delay the adaptive immune response?

Please try to answer my question in detail and correct me If I made incorrect assumptions.

submitted by /u/VersaBot
[link] [comments]

Determining the type of decay an isotope undergoes when it has multiple options?

Posted: 24 Aug 2021 09:47 PM PDT

This question stems from the decay modes of Hydrogen-6 and how it can either decay via triple or quadruple neutron emission to give either deuterium or tritium. How is it determined which mode of decay happens?

As a slight follow up... When the half-life of a particular isotope (let's keep using Hydrogen-6) is defined in yoctoseconds as follows: "294(67) ys" - What is the significance of the bracketed numbers?

Many thanks in advance and sorry for the double question, I figure the second one is likely to be trivial to answer.

submitted by /u/Eviskull
[link] [comments]

How does barometric pressure affect a hurricane’s intensity?

Posted: 24 Aug 2021 09:00 PM PDT

What is the "Overlapping Map Theorem," or whatever it's really called?

Posted: 24 Aug 2021 01:59 PM PDT

I remember hearing about this math/geometry concept where if you were to take two maps of an identical place, even if they're different sizes, then lay one over the other, there will always be a point at which you can place a pin that it will be the same proportional coordinates. I can't find anything by searching "overlapping map theorem" or the like.

This concept was illustrated by the fact you could take any map of the US anywhere in the country, lay it on the floor, and essentially place a "You are here" marker that would also exactly hit the hole in the map itself were an enormous scale pin to drop from the sky.

Does this work for any rotation as well? What if one of the maps is not completely on top of the other?

I thought of this as I was importing some photos into a project into Photoshop. They were all the same size, but some of them had erroneously rotated due to the camera tilt sensor being tricked or something since I was shooting straight down onto a table. I wondered if - instead of rotating and then readjusting position - I would have been able to use this concept to reset the center of rotation around a certain point that would have seen the image placed perfectly without directly shifting position. This would be the case if I would be able to find a point that wouldn't move coordinates from one orientation to another. Obviously it would be too computationally intense for my needs, but I'm still curious.

submitted by /u/YouBeenJammin
[link] [comments]

How much of the COVID-19 does it take to make one sick?

Posted: 25 Aug 2021 03:00 AM PDT

What's the time line for antibody production after the third shot/third dose for the mrna covid vaccines?

Posted: 24 Aug 2021 09:34 PM PDT

I know you're not considered fully immunized until 2 weeks after your 2nd shot.

For those getting the third shot, when do those neutralizing antibody levels start to rise? Is it also 2 weeks?

And is it a more gradual process? As in, each day more antibodies are formed?

submitted by /u/wiredwalking
[link] [comments]

Tuesday, August 24, 2021

Do we have any studies on reinfection rates with Delta in people previously infected?

Do we have any studies on reinfection rates with Delta in people previously infected?


Do we have any studies on reinfection rates with Delta in people previously infected?

Posted: 23 Aug 2021 09:29 PM PDT

Anybody come across any yet? Thank you

submitted by /u/Curivity
[link] [comments]

If I release an ant back outside, can it find its way to its nest or is it hopelessly lost forever?

Posted: 24 Aug 2021 07:06 AM PDT

Sorry if this is a stupid question. I just released an ant outside and am curious as to what will happen to it now

submitted by /u/rememberroses
[link] [comments]

Do spiders have brains, and do their brains have memories?

Posted: 23 Aug 2021 05:53 PM PDT

Do they instead only respond instinctually to environmental triggers like a robot?

Just wondering in case I can actually piss off spiders.

submitted by /u/phongku
[link] [comments]

Do caterpillars have stomachs?

Posted: 24 Aug 2021 08:05 AM PDT

My 3 year old asked, and I couldn't find anything reliable on google to answer her question. I would think so, but the lack of answers makes me curious as well. Any help would be appreciated! Thank you

submitted by /u/unchsn1
[link] [comments]

Since allergies are caused by immune response, do immunocompromised individuals have less allergies?

Posted: 23 Aug 2021 08:17 AM PDT

Covid tracking in sewer systems. What have we learned?

Posted: 23 Aug 2021 09:41 PM PDT

Is anyone still tracking COVID in sewer/waste systems? What's the trend? Where is the best data and what can we infer so far?

submitted by /u/L0gic23
[link] [comments]

Does our brain process the image our eyes see all at once, or does it start at one point and move from there (like starting in the centre and moving outwards, or from one side to the other)?

Posted: 23 Aug 2021 12:56 PM PDT

Idk if this is something that we have the technology to test, but I just wonder if this is a known thing or are there some working theories or something?

Also, knowing this could be used for things like marketing and creating illusions, right?

submitted by /u/KalebC4
[link] [comments]

If renewables produce a surplus of energy in a given town/city couldn't this surplus energy be used to pump water to a higher altitude to store potential energy instead of turning off the turbines (for example)?

Posted: 23 Aug 2021 10:12 AM PDT

I just watched a Tom Scott video, "The Islands With Too Much Power" which sparked my question.

If no battery storage or hydrogen gas conversion is available, why not just run pumps to transport water to a higher altitude to store it as potential energy?

Thanks :) really curious!

submitted by /u/laowaiH
[link] [comments]

How is the information stored in RAM on a PC actually allocated over the various RAM chips?

Posted: 23 Aug 2021 07:41 PM PDT

So, for my question: My PC has 32 Gb of ram spread across four RAM sticks.

How does the PC (Windows 10) allocate that memory? Does it sequentially fill up one stick at a time or is all that information randomly spread across all the sticks?

Further question: If it's sequential, will constant read / writes to a single chip over time degrade it quicker compared to the other sticks / chips in the PC?

submitted by /u/Darksirius
[link] [comments]

How does radiometric dating tell us the age of the earth, as opposed to the age of the volcano/asteroid/elements used in the dating method?

Posted: 23 Aug 2021 02:46 PM PDT

Probably a dumb question, but I'm confused as to how we know the age of the earth through radiometric dating. I've heard we use pockets of material from volcanic eruptions, as well as asteroids, to radiometrically test the age of the earth. But doesn't this just tell us when the volcano erupted or when the asteroid was formed based on the parent-daughter element ratio? And with the volcano example, how do we know that no daughter element got trapped with the parent element in the pocket, skewing the ratios? I could see that dating the volcano pocket would tell us that the age of the eruption is <= age of the earth, but the asteroid could be older or younger than the earth, right? I feel like there must be something simple I'm missing here. Thank you in advance for your time.

submitted by /u/ExmoThrowaway0
[link] [comments]

Which chamber of the heart has the largest volume?

Posted: 23 Aug 2021 08:52 PM PDT

Do all spiders spin webs?

Posted: 24 Aug 2021 12:37 AM PDT

I imagine spinning webs is the 'easiest' way for spiders to catch prey, assuming all spiders are capable of spinning webs. If all are capable but not all do this, what other ways do they use to catch prey and why don't all of them spin webs?

submitted by /u/Severe-Bag2945
[link] [comments]

Why are fossil lobsters from 100 million years ago considered the same genus as modern American lobsters?

Posted: 23 Aug 2021 02:22 PM PDT

The modern American lobster (Homarus americanus) belongs to the genus Homarus, along with the European lobster. But there was also species of Homarus lobster from the Cretaceous, Homarus hakelensis. Based on the specific period H. hakelensis lived, it seems like taxonomists have the genus Homarus existing continually for over 100 million years.

Are there many other genuses that have survived for such a long period of time, and if not, why haven't these Cretaceous lobsters been assigned a separate genus from their modern-day cousins?

submitted by /u/djublonskopf
[link] [comments]

Why is symmetry attractive?

Posted: 24 Aug 2021 12:03 AM PDT

AFAIK, one of the features that best predict if someone is thought of as attractive regardless of things like cultural background is symmetry of the face. I think this holds true not only for humans but also for animals. A typical handwavy explanation for this is that this is an indicator of 'good genes'.

But what does that mean exactly? And why are good genes making symmetric faces? Or Is there another explanation?

submitted by /u/jsamke
[link] [comments]

Why is the lambda variant only considered a VOI despite its proliferation in South America?

Posted: 23 Aug 2021 10:29 AM PDT

How far from the surface of the Earth does an object need to be before centrifugal force overcomes gravity?

Posted: 23 Aug 2021 10:01 AM PDT

I'm curious because of the "space elevator" plans (or ideas).

submitted by /u/robbmann297
[link] [comments]

Childhood mortality rate for COVID Delta variant?

Posted: 23 Aug 2021 03:05 PM PDT

What is the mortality rate for COVID Delta variant infections among unvaccinated children?

submitted by /u/maraschinoBandito
[link] [comments]

What chemical changes occur when the position of an alcohol group is moved from one carbon to another in an organic compound?

Posted: 23 Aug 2021 08:25 PM PDT

For example: what is the chemical difference between 1-propanol and 2-propanol (isopropanol)???? What characteristics change? Is there any effect to bond enthalpy and enthalpy of combustion?

submitted by /u/SRosenberg1088
[link] [comments]

How much energy could have been released in the great oxidation event?

Posted: 23 Aug 2021 12:25 PM PDT

When cyanobacteria first made oxygen and oxidized the planet, how much energy could have been released, like how fire is just rapid oxidation.

submitted by /u/Fish_Fortner
[link] [comments]

Why does the Earth’s tilt on its axis determine the seasons instead of its relative position as it revolves around the sun?

Posted: 23 Aug 2021 11:35 AM PDT

Wouldn't it make more sense for the entire planet to experience summer together when the planet is approaching the closest point to the giant ball of fire that warms the planet?

submitted by /u/stowrag
[link] [comments]