One of my favorite sayings is that magic is simply science that we haven't understood yet. Think about it: if you showed your smartphone to someone 300 years ago, you may have found yourself burnt at the stake for witchcraft! Still, as much as I am a huge believer in science, I will admit that it doesn't have all the answers.
There are still so many mysteries in life that science has yet to unravel - did the chicken come first, or the egg? What is the sound of a tree falling in a forest with no one to hear it? Where did the first spark of life on this planet come from? There are many questions out there.
That's why we've compiled this list of some of life's mysteries that science has yet to understand. I'm still amazed that we haven't figured some of these out.
1. How Do Cats Purr?
We know that cats purr when they're feeling content, but we aren't really sure how that sound is produced. Scientists believe the vibration is produced in the vocal chords, and its frequency accelerates healing and reduces pain.
2. What Is The Origin Of Certain Creatures?
As of now, there are several species that don't have any known ancestors. No one really knows when amphibians evolved because the first known land animals already had well-developed limbs and heads.
Additionally, we don't really know what specifically killed the dinosaurs 65 million years ago - at the same time that mammalian species suddenly appeared on the scene.
3. Do Cows Have Magnetic Compasses?
Scientists used Google Earth to study the grazing patterns of thousands of cows and found a strange pattern. 70% of the cows turn their heads north and south while eating or drinking, regardless of their continent, terrain, climate, and other factors.
4. What Was The "Gelatinous" Rain?
In August 1994, an unusual phenomenon occurred in Oakville, Washington when a strange, jelly-like substance rained from the sky and dozens of nearby residents got flu-like symptoms the next day.
Scientists found that the substance contained two types of bacteria, including one usually found in the human digestive system. They were, however, unable to establish a connection between the bacteria and the mysterious illness.
5. What Is Dark Matter?
Nearly 27% of the universe is dark matter, which doesn't emit or interact with electromagnetic radiation, so it's impossible to detect its presence. Scientists first began theorizing about dark matter nearly 60 years ago, but we still have no direct evidence of its existence.
6. How Many Planets Are There In Our Solar System?
It used to be nine, but ever since Pluto was excluded, there are officially eight. The Kupier Belt beyond Pluto consists of several icy objects, some of which are larger than Pluto. There is also a large gap in the Kupier Belt that scientists believe was caused by a planetary body as big as Earth pulling the stones from the belt to itself.
7. Why Are People Right Or Left-Handed?
While the majority (70-95%) of humans are right-handed, a minority (5-30%) of them are left-handed and an indeterminate number are ambidextrous. Genes are believed to have some influence, but there is no "left-handed gene." Social environments can also be an influence - my grandparents believed left-handedness was bad and eventually conditioned my father to be right-handed.
8. Why Did Megafauna Die Out?
Giant animals (megafauna), disappeared 10,000 years ago. Some people believe climate change was a factor, while the discovery of mammoths with undigested greens in their stomachs suggest the possibility of mass starvation.
9. What Causes Dreams?
There are a multitude of theories here. Some believe dreams are random images and brain waves, while others think dreams are the manifestation of subconscious desires and unresolved issues. Scientists also believe that dreams symbolize something hidden in the human psyche, but there are no universally agreed-upon definitions.
10. What Is "Space Roar?"
While studying young stars back in 2006, scientists heard a mysterious roar. Sound doesn't travel in space, but radio waves do, and scientists were baffled as to the origin of this noise.
11. Why Do We Have Different Blood Types?
Different blood types mean that you have different antigens in your blood cells. These antigens help destroy foreign cells in the body but scientists have no idea why they're different. Some believe it may have something to do with diseases and immunity. People with blood type B are more susceptible to E. coli, while people with blood type O have a lowered risk of dying from malaria.
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H/T: Bright Side