r/askscience • • Apr 29 '25

Joint Subreddit Statement: The Attack on U.S. Research Infrastructure

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1.8k Upvotes

r/askscience • • 22h ago

Earth Sciences Could a mangrove forest mummify a body?

87 Upvotes

I’ve been reading fiction that uses a lot of bog bodies, and I love that as a concept and wanted to use it. Thing is, I don’t live in an area of the world where bogs exist, and was thinking of localizing that idea and maybe doing Mangrove Bodies.

I know mangroves also have very low oxygen, especially as you go deeper into the mud, so I was wondering if a body buried deep enough in a mangrove forest could be preserved similar to how it might in a bog, or if the chemical conditions and life in there would cause it to decompose instead?


r/askscience • • 1d ago

Biology Is it possible to be bigger than a Blue Whale?

1.4k Upvotes

What I mean is how big can an animal theoretically get?
The blue whale is not only the largest animal alive, but the largest to ever exist (that we know of)

But is it actually possible for something to be bigger? Or is the Blue whale the max?


r/askscience • • 1d ago

Biology Do a slice of bread and a slice of toast have any difference in nutritional value?

584 Upvotes

Taking into account moisture, ease of digestion, etc? If they do, I'm assuming the difference is neglgible.


r/askscience • • 21h ago

Biology Could non-mammals develop different secondary sex characteristics if given the correct hormones?

25 Upvotes

From my understanding, hormone replacement therapy works in humans in large part due to the X chromosome holding most of the genetic code. So, someone with XY chromosomes still carries the genes for the development of female sex characteristics (and vice versa for people with XX chromosomes- male sex characteristics are also coded on the X chromosome)

I’m curious about how (or if) this rings true in animals with different sex chromosomes. For species that use genetic sex determination, is there always one chromosome that contains most of the genes for the development of sex characteristics?


r/askscience • • 1d ago

Engineering I do not understand how slots on the intakes of AJS37 Viggen help to smooth out the airflow to the compressor, I haven't been able to find info on it on the internet, it doesn't seem to work just as a boundary level bleed slot or maybe it does and I lack understanding about how it does it?

36 Upvotes

Pictures of the intakes: https://imgur.com/a/tUWMEqe

On the intake ( on both of them but I will talk about a single one ) there is a splitter plate positioned on the inside and right on the inside corner near the splitter plate there is a narrow slit. It is there to allow for smoother airflow during high AOA flight but I don't understand why it helps at all. The boundary level becomes really strong on the bottom of the intake during high AOA which will just bleed the boundary level right into the intake and in my head it will just make things worse even though it actually helps. The only thing I can think of is that it creates vortices in the intake. I probably said a lot of incorrect stuff so I apologise if it can be confusing or just plainly a really easy question that I just lack basic knowledge in this field to understand


r/askscience • • 1d ago

Biology Why do bananas overpower most flavors when added in a smoothie?

454 Upvotes

Is it just a concentration thing or more of an aspartame mechanism thing? Are the flavor molecules more plentiful or just more potent?


r/askscience • • 1d ago

Earth Sciences Would any of the dinosaur ages had to have dealt with stuff like tornados or huricanes?

143 Upvotes

Sorry if this is under the wrong flair, thought it would work better than paleontology.

So like, I imagine if one can generally predict weather patterns for artificially created/simulated worlds, we can easily use the same science and stuff on what we know of Pangea's geography and stuff to determine weather patterns during that age, right?

So were conditions on our world at the time suitable for stuff like hurricanes and tornados?

Bonus question for paleontologists: if the above is true, how would taller dinos like sauropods have dealt with high winds of that magnitude?


r/askscience • • 18h ago

Human Body [NSFW] Why do Kids Jump Around to Delay Urination? NSFW

0 Upvotes

My 6-year old niece does this. My nephew did this when before he turned 5. Dad assures me that his youngest brother and I used to do this as well. Is it common outside my family too?


r/askscience • • 2d ago

Ask Anything Wednesday - Engineering, Mathematics, Computer Science

46 Upvotes

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!


r/askscience • • 3d ago

Human Body If the inside of the mouth heals so much more quickly than any other part of the body, why isn't oral cancer the most common type of cancer?

2.4k Upvotes

Unless the healing factor is something unrelated to cancer development? How does that work?


r/askscience • • 3d ago

Engineering I know what causes the stream but what caused the large ball on the space x launch from today? other jellyfish launches don't have the big ball. was there an explosion or separation?

122 Upvotes

r/askscience • • 3d ago

Human Body What causes veins to be able to be seen through the skin?

316 Upvotes

So when you go to the doctor, they will look at your veins on your elbow. Some need a needle to move the vein closer, some don't and their veing is naturally positioned in the right position. Some people also have veins visible all over their body (not like bulging, but color visible on the skin). I was curious on why this happens?
(I can explain more what I'm asking about if I'm not clear)


r/askscience • • 3d ago

Social Science AskHistorians/AskScience AMA Series: What do you want to know about wool and science in the mid-twentieth century?

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105 Upvotes

r/askscience • • 4d ago

Human Body What causes spontaneous, unconscious body movements, and how does the brain control them without conscious intention?

155 Upvotes

r/askscience • • 4d ago

Physics Why do small bubbles form and cling to a metal object that is submerged in hot/simmering water?

217 Upvotes

i boiled water this morning to make some oatmeal. i turned off the stovestop and left some simmering water in the pot. after i used the metal measuring cup, it sank to the bottom of the pot. after about five minutes, i noticed bubbles that had formed and clung to the metal in the still hot water (about 180F/82C).

i have no idea exactly what metal the pot or measuring cup are made of.

please see my reddit profile for an image of this phenomenon, or see the first comment of this post.

thanks in advance.

edit: thanks for the answers everyone! i love being able to explain science to my kids!


r/askscience • • 5d ago

Biology Why do wild grasses not require crop rotation like domestic crops?

48 Upvotes

r/askscience • • 8d ago

Mathematics if i throw a coin several times and it always falls on tails, how many times until i can consider the coin is rigged?

1.1k Upvotes

the general question: how do we calculate how conclusive an experience is?

itried to look up methods to do that, but it's about more complicated experiences and i can't understand where the explained methods come from. i think if i understand how to do it for a simple case like the title, maybe i'll understand what i have to ask myself for any experience?

sorry if it isn't clear what i mean. put mathematics flair, but it's about research in general, didn't find a better flair


r/askscience • • 6d ago

Physics Que se passerait-il si je versais une quantité X d’eau bouillante dans un récipient constitué d’une quantité équivalente X de glace ?

0 Upvotes

À quantités équivalentes, que se produit-il lorsqu'on verse de l'eau bouillante dans un récipient entièrement constitué de glace? Lequel des deux cède en premier, et quel est l'état final du système?

Je ne suis point un scientifique, un chercheur ou tout autre synonyme de ces fabuleux corps de métier. Toutefois, si vous voulez aller plus loin, voici une difficulté plus élevé à mon sens:
La structure du contenant est décisive.


r/askscience • • 9d ago

Neuroscience AskScience AMA Series: I'm a neuroengineering professor at Brno University of Technology with a new book on why health fails at its weakest link. Ask me what brain signals can and can't tell us about stress, anxiety and depression, and how sleep, movement, food and loneliness relate to mood! AMA!

130 Upvotes

Hi r/askscience!

I'm Aamir Saeed Malik, Professor of Neuroengineering at Brno University of Technology in the Czech Republic, where I head the Cognitive and Neural Engineering research group. I came to the brain the long way round, through electrical engineering and a doctorate in mechatronics. For almost three decades I've worked on measuring it: EEG, brain imaging and the machine-learning methods that try to pick out the signatures of stress, anxiety and depression early. From 2009 to 2018 I worked at the Malaysian National Center of Neuroimaging, and I've collaborated with clinicians in Malaysia, Saudi Arabia, Australia, the US and the Czech Republic. My most recent funded project asked whether that kind of tracking could be done from a person's own home rather than a clinic.

Over those years my view changed. For a long time I studied the brain the way a cardiologist studies the heart: as if it were an island. It isn't. Sleep, movement, food, daily habits and the people around us all bear on the conditions I was trying to measure. Engineers have a rule for systems like that: a chain is only as strong as its weakest link, not its average. That idea became my new book for general readers, Fix the Floor (https://fixthefloor.life/ ). It scores five everyday areas (habits, social connection, sleep, movement and food) and combines them with a harmonic mean instead of a plain average, so one weak area can't hide behind four strong ones.

I'm happy to answer questions about:

  • What brain signals (EEG) and brain imaging can and can't tell us about stress, anxiety and depression today
  • Why early detection is harder than it sounds, and where my field needs to be more honest about its limits
  • What the evidence says about sleep, physical activity, loneliness and diet and their links to mood, including where it looks causal and where it is only correlation
  • Why the way you average a set of health measures changes the answer, and the maths behind the harmonic mean
  • Or any lifestyle based health and wellness related questions.

One thing I won't do: I'm not a medical doctor, so I can't give personal medical advice or comment on anyone's symptoms or results.

I'll be answering from noon ET (16:00 UTC) for about two hours.

Username: /u/Aamir_fixthefloor


r/askscience • • 10d ago

Medicine does pregabalin cause an increase in gaba?

95 Upvotes

Me and my friend got into a disagreement over this, i don’t remember exactly what she said but it was something along the lines of pregabalins effects on neurotransmitters somehow causes more gaba to be released so the brain can mantain homeostasis or something but i can’t find anything anywhere to back that up (i can’t find much either way which is why im asking here) and everything i’ve seen says it has no effect on gaba other than possibly affecting the gaba transporter protein.


r/askscience • • 11d ago

Social Science AskHistorians/AskScience AMA Series: What was the Great Horse Flu, and what can it tell us about people, animals, and disease in the Reconstruction Era--and today, with Thomas Andrews?

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158 Upvotes

r/askscience • • 12d ago

Biology Why is there a vaccine for Lyme disease for dogs but not humans?

2.6k Upvotes

r/askscience • • 13d ago

Biology Why are African animals so huge?

610 Upvotes

I live in Australia and the largest land animals I can think of here is probably a kangaroos and emus which really aren’t any larger than a human. But my family recently went to Africa and the diversity animals is actually crazy. So so so many large animals living in the same place side by side. Rhinos, elephants, giraffes, wilder-beasts, zebras, hippos, warthogs, buffalo’s, ostriches, lions, cheetahs, hyenas leopards and probably more that I forgot. I never really appreciated how big these animals were until I actually got to see them in person absolutely amazing. Australia and Africas climate is kinda similar in a lot of places. Why is our country ecosystem dead in comparison?


r/askscience • • 13d ago

Biology [Chemistry/Biology/Nutrition] Did cooking bread provide any nutritional benefits over boiling the same grain as a porridge?

414 Upvotes

Asking the question in the historical context, not to decide on nutrition in the modern day.

I know heating grains helped to unlock some nutrients and especially caloric content over just eating them raw. However did bread provide any nutritional benefits over just boiling the same grain as a porridge (a much simpler process), or was its popularity due to other factors?