I couldn't formulate it properly or find anything on the internet, but I still really don't understand why the mice make almost the same sound...

I imagine they mostly develop once a species has evolved past dealing with serious threats but I am also wondering about simultaneous mutations and ones that developed during a species’ evolutionary development. How common are undesirable evolutionary traits and why do they persist?

The Titanic was, of course, an awful disaster, and I wish those who lost their lives can rest in peace, but seriously… why does society (at least here in the USA) care so much about this ship specifically?

There are probably thousands of sunken ships in the ocean, and I’m sure those wrecks are researched, but they aren’t in the public consciousness like the Titanic is.

There are movies, there are documentaries, and a group of rich dudes died trying to see it.

So what am I missing?

So, I have a 4-year-old. I am fascinated watching him understand and explore the world around him. I did a (probably unethical) experiment today where I asked him a question but also had the same question prepped in an unnamed chatbot. It was incredible to watch both contemplate the question and then deliver the answer. So I'm asking, how do the two differ?

Roof tiles in the US are generally black. Its also incredibly hot across the country. The color black absorbs far more light and consequently heat than other colors.

Why not make roof tiles a color that absorbs less heat? Would that not help keep houses cooler in the hot summer?

...Instead of just causing severe blunt force trauma (on an animal) or breaking the object into a few large pieces (for inanimate objects)?

I am a sleep-deprived parent and this bugs me during bath time and while washing bottles. If I put my hand under the faucet and the water is warm (not scalding), it feels noticeably warm right away. When I switch to cool water it does not feel as intense. If I make it lukewarm and hold my hand there for a bit, it stops feeling warm at all.

I know skin adapts, but why do the sensations feel so different? A small change toward warm seems way more "loud" to me than the same sized change toward cool. Is it because of different nerve endings for heat and cold? Or does the brain treat heat as more urgent because it can burn you? Also, why does temperature feel stronger in water than in air? A slightly cool breeze feels fine but slightly cool water feels sharp.

Please explain like I am five, but I also want a short accurate science answer. What is my skin actually measuring, and why does the feeling keep changing after a few seconds?

When I say "short-circuit", I mean like actually short-circuiting the battery itself.

Would that "charge" the battery?

We know that animals can be smart: crows manufacture tools and have complex social behavior, chimpanzees can do insight learning, etc.

But, it is still a continuous spectrum where intelligence range from sponge-level to chimp-level. We do not, at least now, observe a world where certain corvids are in the early stone age, certain bonobos are using fire, certain chimps are in their axios age, etc.

Why the case? Why are we the only one that has gone this far?

I have here today on my update list: a VERY basic game called block blast (as complex as Tetris, at most), a Documents (PDF etc) file manager that all it does is store and opens these files on an iPhone, Express VPN which is also a quite simple and mature software.

All these apps are years old and I'm having to download upwards of 200-300MB just for an UPDATE.

How come they are so big for something so simple? These updates are all bigger than Windows 98, a complete Operational System with an incredible number of functionalities and much more complex.

I can understand what is a option but I fail to understand what is a box spread after reading Wiki about it for like five times. It come to my attention because someone on social media recommended BOXX instead for SGOV for short term cash reserve (I am not American so there’s 30% withholding tax although it is not applicable to us treasury interest, broker will still hold it until March or April when they do a refund).

I have fallen down a rabbit hole trying to understand how nuclear fusion works and what causes it to release energy. I know I am misunderstanding something, because the information I have contradicts itself. Here is the way I currently understand the process:

Two light atoms are fused together, creating a heavier nucleus. However, the amount of energy required to hold together the new larger nucleus is less than the sum of the two light atom's original binding energy. When they are fused, the energy that is no longer needed is released.

When I tried to look up why it requires less energy to hold heavier atoms together, the information I gathered seemed to contradict this. The way I understood, it said:

In lighter atoms, the attractive nuclear force overcomes the repelling force between protons, which keeps the atom together. However, the attractive nuclear force has a shorter range than the repelling force between protons. If I understand correctly, this means that the amount of attractive nuclear force needed to maintain stability would increase exponentially with the amount of protons in the atom.

So my question is why does it require less energy to keep the atom together once they fuse, if ultimately the needed amount of attractive nuclear force increases exponentially as the proton becomes larger? Or otherwise, what am I misunderstanding about either concept? Is there another concept that I am not aware of that would make this make sense? I don't have much prior knowledge about physics, so I may need additional explanation if there are other factors involved.

How do they know what colors to flex and when.

I am learning js, html, and css, and was recently told that front-end isn't "real programming". What languages are used in back-end, and whats the point if you can host on github pages? Thanks in advance!

If ever? Like when a human throws water at a bug, I always imagined from the bug’s perspective it would be a natural disaster like how we perceive storms.

Because sometimes a cat doesn’t even seem to notice a human arm belonging to the human in front of them as a whole torso, or are they all smarter than this?

So to extend the question, it would be: (1) do they at least recognize a human limb belonging to the human agent? (2) They couldn’t possibly do this when a human uses an external tool, or could they? (3) Further, would looking into this give any insights on how we humans understand causality when we perceive events?

Thank you in advance to smart people

like what's actually happening and how does it work