Cool Facts Sunday
A collection of miscellaneous biological, physical, and natural-world facts ranging from human physiology to animal behavior to chemistry and astronomy. The post is structured as a simple list without argument or narrative connective tissue.
Unless food is mixed with saliva you can’t taste it.
A female dolphin will assist in the birth of another’s baby dolphin.
Human saliva contains a painkiller called opiorphin that is six times more powerful than morphine.
If you Google ‘Zerg Rush’ Google will eat up the search results.
During pregnancy a woman’s brain shrinks and it takes up to six months to regain its original size.
Putting sugar on a cut or wound reduces pain and speed up the healing process.
Temperature can affect appetite. A cold person is more likely to eat more food.
Your left lung is smaller than your right lung to make room for your heart.
The smell of freshly cut grass is actually the scent that plants release when in distress.
All the blinking in one day equates to having your eyes closed for 30 minutes.
Human brain is more active during sleep than during the day.
85% of plant life is found in the ocean.
Sponges hold more cold water than hot
Fire usually moves faster uphill than downhill
Hummingbirds are the only bird that can fly backwards
A duck can’t walk without bobbing its head
A strawberry is the only fruit which seeds grow on the outside.
An elephants ears are used to regulate body temperature.
Your skin is the largest organ making up the human body
Cows don’t have upper front teeth
Apples are more effective at waking you up in the morning than coffee.
Australia is the only continent without an active volcano.
A rainbow can only be seen in the morning or late afternoon.
Your most sensitive finger is your index finger.
Ants stretch when they wake up in the morning
Two days after they die, ants give off an odor which other ants pick up on. They come pick up the ant and carry it to an ant graveyard.
Mars appears red because it’s covered in rust
Diary cows give more milk when they listen to calming music. It also relaxes the cows and decreases stress levels.
The stomach acids found in a snakes stomach can digest bones and teeth but not fur or hair.
Human thigh bones are stronger than concrete
The Atlantic Ocean is saltier than the Pacific
Not all your taste buds are on our tongue (10% are on the insides of you cheeks)
Sharks are immune to all known diseases
Carrots contain 0% fat
Hot water freezes quicker than cold water
Your most active muscles are in your eye
Rain contains vitamin B12
Horses sleep standing up.
Crocodiles are color blind
Crocodiles swallow rocks to help them dive deeper
Dogs sweat through the pads on their feet
A shark’s teeth are literally as hard as steel
Sharks never stop moving even when they sleep or rest
The water in the Dead Sea is so salty that it’s easier to float than sink
The most sung song is happy birthday
When recognizing a person’s face you use the right side of your brain
Men have 10% more red blood cells than women
When your face blushes so does your stomach lining
The bones of a pigeon weigh less than its feathers
The most common disease is tooth decay
Giraffes has the highest blood pressure of any animal
Shrimps are all born male but slowly grow into females
Mosquitoes prefer children to adults and blondes to brunettes
90% of all volcanic activity occurs in the ocean
The first place in the world to allow women to vote New Zealand
‘Fan’ is short for ‘fanatic’
Jellyfish don’t have a brain
A hippopotamus can run faster than a man
Camels have 3 eyelids to protect themselves from blowing sand
A camel can shut its nostrils during a desert sandstorm
Sheep won’t drink from running water
There are over 100 different viruses that cause the common cold
Every living thing on the Earth contains carbon
It takes 17 muscles to smile and 43 to frown
Once a women reaches the age of 30 they lose 1% of their bone mass every year thereafter (by the time a women is 50 she will have lost 20%)
The bigger the orange the sweeter and sweeter it is.
When hydrogen burns in the air, water is formed.
Newborns are more likely to turn their head to the right than to the left.
Your fingernails grow faster in cold weather.
It is genetically impossible for a rose to come in color blue.
The plastic things on the end of shoelaces are called aglets.
If you try to say the alphabet without moving your lips or tongue every letter will sound the same.
Dim lights reduce your appetite.
Dragonflies have 6 legs but can’t walk
Source: http://interestingfact.net/
This piece belongs to the era of listicle-driven social media engagement circa 2017, when curiosity-click content and fact aggregation dominated Facebook feeds. The writer curates from popular fact repositories, reflecting how internet culture circulated trivia as a form of casual knowledge-sharing and entertainment.
As an artifact, it shows the particular flavor of pre-algorithm Facebook: earnest, impersonal, designed to invite light surprise rather than provoke thinking. Returning to it now reveals both the appeal and the limitation of frictionless fact delivery—interesting in isolation, but unmoored from context, verification, or deeper inquiry. It marks a moment when 'sharing knowledge' online meant quantity over rigor.