#9 Humans Have Same Amount of Fur As Chimps
If you look at the human body, it seems like the average person has far less “fur” than the average chimpanzee. However, researchers found that humans have just as much hair as our cousins – the human hairs are just incredibly fine in comparison to the fur of other mammals.
#8 Goose Bumps are Human Attempt to “Fluff Up”
Evolutionary biologists have a simple explanation for why humans get goose pimples that appear as little bumps They happen when tiny muscles around hair follicles contract. When humans had fur, goose pimples had the affect of making the fur stand on end. This defensive “fluff response” can be seen in many animals, like big cats and bears.
#7 Humans are Mostly Empty Space
Humans are mostly comprised of empty space (which should not be considered a “waste of space”!) That’s because the atoms that make up the human body are mostly made of air. If the body lost all of the atomic space, it would shrink to the size of 1/500th of a centimeter and fold up into a cube.
#6 Blood is not Red Because of Iron
Although it is commonly believed that blood is red due to the presence of iron, that’s a coincidence. Blood turns red when exposed to oxygen because iron is bound up into a ring of porphyrin atoms, which takes place in the hemoglobin. Oxygen changes the shape of the porphyrin and the shape-change creates the color.
#5 Humans are Mostly Bacteria
Human beings are made up of bacteria. Each person has about 10tn of cells, but the bacteria dwarfs the healthy cells by 10 to 1. Although many scientists examined whether killing bacteria could help create healthier organisms, the results are clear that humans and other organisms thrive with bacteria.
#4 Our Eyes Have Blind Spots
The area of the eye where the optic nerve joins is called the retina. It does not create or allow images. As a result, there is a large blind spot that the human brain fills in, making it seem steadier than it is. The brain creates its own model of the world and fills in the blind spot with a delusion.
#3 Humans have Eyelash Mites
Humans have eyelash mites, microscopic bugs that live on old skin cells between the eyelash and the eye. Up to half the human population has eyelash mites at any given time. The mites are so small and light they cannot be seen without a microscope.
#2 You are not Sitting on a Chair
Although you may believe you are sitting on a chair right now, your body is actually suspended just above the chair, hovering in suspension. Atoms that make up matter never touch, in fact, as they get closer they repel each other more. As a result, even objects that look as though they are touching are not, since the electromagnetic force is much stronger than gravity.
#1 Appendix is not Obsolete
Humans commonly believe that the appendix is an obsolete organ long rendered useless by evolution. However, researchers found that the appendix still has significant usefulness. The appendix is like loading zone or resting place for the bacteria your gut needs to digest food.