Whitelist Recruitment but..

Hair and fur are chemically indistinguishable.
Source
More facts about hair

youtube.com/watch?v=7Zm1hPbmzPw
A common fact that not many people know.

There are plants without chlorophyll. How do they survive? They host fungi (don't think of mushrooms, think of micelia) among their roots so the fungi break the large organic molecules into smaller ones they can use. Then the fungi absorb a part of them and the plant the rest. Like the rest of plants which use other plants as hosts (but still they have chlorophyll), these plants are not symbiotic with the fungi, they are parasits of them. One beaufitul example of these plants is the phantom orchid.

What makes octopus and squids ink so dark and capable of darken so much water is melanine - the same molecule which gives colour to our eyes, hair and skin. In certain cultures, the ink is used to make a sauce to eat the squids with (squids in their ink).

The smallest insect of the world is a parasitic wasp, only visible through microscope. It's so small that there are entire families of bacteria larger than it. Speaking of large bacterias and unicellular organisms, some are visible to the naked eye.

Caenorhabditis elegans, usually referred as c. elegans, is a simple nematode. It's an eutelic organism, meaning that every member of the species has the same number of cells. Some species of tardigrades (water bears) are also examples of eutelic organisms. The case of c. elegans is special because it's one of the most and better studies organism in biology, to the point that it was the first organism entirely simulated in a computer, with each of its 959 cells doing their tasks and interacting with nearby cells (simulation still improving). The simulated c. elegans is the common hermaphrodite gender; there are no females in this species, tho a few specimens are males, also eutelic but with a different number of cells: 1033.

If you have mononucleosis, your spleen may explode.

Clouds are really heavy! The average cumulus cloud can weigh up to a million pounds. They can still float because the air below is even heavier.

There are no blue birds. There are only birds that appear to be blue because of a phenomenon called light scattering, but their feathers are actually brown thanks to the pigment melanin.
Tiny pockets of air in their feathers absorb all wavelengths except blue, which is reflected. If you took a feather from a blue bird and backlighted it, you would see its true color, brown, because you wouldn't be seeing any reflected light.

Sloths don't fart from their butts. Gasses are absorbed into their blood stream and are breathed out.

Let's talk "sugar".... h-e-a-v-y sugar!

A teaspoon of sugar neutron star... would weigh 6 billion tons
A neutron star is the remnants of a massive star that has run out of fuel. The dying star explodes in a supernova while its core collapses in on itself due to gravity, forming a super-dense neutron star. Astronomers measure the mind-bogglingly large masses of stars or galaxies in solar masses, with one solar mass equal to the Sun’s mass (that is, 2 x 1030 kilograms/4.4 x 1030 pounds). Typical neutron stars have a mass of up to three solar masses, which is crammed into a sphere with a radius of approximately ten kilometres (6.2 miles) – resulting in some of the densest matter in the known universe.

idk if it counts as scientific but here it goes:

When in weather report it says that rain probability is 30% it doesn't mean that there is a 30% chance of a rain but that there will be rain in 30% of measured space (like city or country)

Humans have pigmentation similar to the lines, splotches and swirls you see on cats. it's just not in our visual spectrum.

Known as "Blaschko Lines" other than certain skin conditions, you need a UV light to see the patterning.

https://unbelievable-facts.com/wp-content/uploads/2021/06/lines.jpg

Another fun one...

Trees dont grow from pulling up nutrients from their soil, but grow from the inside out, by breathing in co2, and sequestering the carbon in it's cells as building blocks. This is how you get rings on trees, and why mainly only the outer layer of a tree trunk is alive.

Also, every leaf tip has a vein that travels down the branch, just under the outer layer of bark in the cambium layer, and out to a root tip.

So for every root tip you cut you're killing that leaves source of micro nutrients. For larger roots, think of like it killing the internet connection to thousands of "homes" at a time. In this case, those homes being the leaves.

seahorses, pipefishes and seadragons are the only animals where the males get pregnant

Karen Wetterhahn died in 1997, months after exposure to a few drops of diethyl-mercury that got absorbed through her rubber gloves that were thought to be safe.
The event and her death lead to stricter safety protocols (turned the chemical got past out most of the gloves in seconds) and changes in NMR spectroscopy where it was used as a calibration standard.

Did you know that every day you produce enough saliva to fill a bottle?

Pearls melt in vinegar.

There is no scientific distinction between a tortoise and a turtle as an identifier of different subspecies. Also turtles and tortoises have cloacas so they basically have an all purpose hole for peeing pooping and cumming and their fluids often are mixed together before they're released. Have a nice dinner!

Cows kill more humans every year than sharks.

the fastest route between two points isn’t a straight line. It’s an isochronous curve.
https://www.you tube.com/watch?v=eBc827pwKf0

If you do an online search for "Planck black holes," you should be able to learn about the Planck Constant, maybe a bit of quantum physics, and black holes.

May your mind be in it's prime but flexible enough to switch to it's evens when finding patterns. Also, imaginary numbers are our friends.

The tongue normally rests on the palate)

Here, I bet u didn't know it yet.

Electrical energy doesn't flow in wires

Instead, energy is transmitted by the electric and magnetic fields around the wire. So, if you taught by your teacher that energy flows inside a wire, that's a lie. Wanna proof?

First, "Tesla's invention burnt because he flows the electricity on the ground". Tesla dreamed for Earth's "free electricity" and when he put a light-bulb on the ground near the Tesla coil, it light up without a wire. <-- This is a sign that Tesla wanted to make 'Free Energy' for the world, businessman hated it! That's why back to my statement, his invention burnt into the ground.
Second, if you make a really long wire/cable to light up a bulb it will take a matter of second to light up, no matter how long is your cable. Because the energy itself transfers from the electromagnetic around the wires to the light-bulb.
Third, if the energy only flows inside the wire, we won't discover radio signal.

[EXTRA: since you are into sounds]
FACT:
When traveling through water, sound moves around four times faster than when it travels through air.

Sounds have patterns
(it was proven by sounds resonance experiment.) Proof? -> https://www.youtube.com/watch?v=wvJAgrUBF4w

Also, fact. I am a 'social studies' dude that love sciences and electricity :)

My favorite scientific fact is if you put a chicken bone into a jar of vinegar for a couple days and then take it out the bone can be bent like rubber. Why it did that I had no idea but I did that as a science experiment as a kid, and it's still my all time favorite "This is crazy!" thing from my life. XD No need for WL btw. I just saw "Science fact" and I wanted to share that. XD Now that I am an adult though I know it's because of the acidic property of the vinegar and the calcium from the bones being displaced into the water. A similar thing happens with a boiled egg where it becomes like a rubber ball. Haha.

Lets go with a simple one. Insects have no lungs and no circulatory system to distribute oxygen through the body. They rather breathe by tiny holes all over their body.

Bonus fact: frogs swallow food by pushing it down with their EYES.

Some animals, mostly invertebrates, have blue blood. This is because instead of hemoglobin which is iron-based, they have hemocyanin, which is copper based. Hemocyanin also has a few different aspects to it, for instance, where hemoglobin attaches itself to red blood cells, hemocyanin floats around in blood freely. It also carries oxygen better in low oxygen environments like in the deep sea.

Dino fact: The colors of multiple non-avian dinosaurs are known, for example the four winged Microraptor had black iridescent feathers, and one spiky dino called Borealopelta was reddish-brown.

2nd dino fact: Velociraptor didn't look like what you see in movies. They were most likely nocturnal, they mainly hunted smaller animals, they didn't hunt in packs, and they were feathered and much smaller then the popular movie versions. You've probably heard of those last two.
The raptors in Jurassic Park were actually based on Deinonychus, a larger relative of Velociraptor and the only one that has some evidence of possibly hunting in packs. Deinonychus were also feathered though.