12 Facts About Blue Eyes You Don't Know

12 Facts About Blue Eyes You Don't Know

We are more than just a pretty iris
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What is it about blue eyes that we love? Is it their rarity? Their range of hues? Are they symbolic of something from our past? What makes us go for those baby blues? One thing someone is bound to mention within a short time of meeting me is something about my eye color. Being the inquisitive person I am, I decided to start researching why we tend to like blue eyes so much. As I read through more and more articles, I began to learn more about the history and biology about blue eyes. I don't know if I will be able to answer why we like them so much, but I definitely think these facts make them much more interesting.

1. Only 8 percent of the world's population has blue eyes.

Some countries have a majority of blue eyes, but that is misleading. The most dominant eye color in the world is brown at 55 percent.

2. There is no blue pigment in blue irises.

The blue coloring is actually due to the iris having a colorless stroma and no excess collagen deposits. This results is the Tyndall effect, making your eyes look blue the same way the sky looks blue even though it really is not, due to Rayleigh scattering.

3. The shade of blue is dependent on mineral deposits and light.

The Tyndall effect relies on light scattering and proteins and minerals found in your eye can effect how much of it is scattered.

4. Blue-eyed people are more sensitive to light.


Blue-eyed people lack melanin in their irises, which is used to shield the eye from intensive light, like the sun or fluorescent lighting. Our eyes might be wide open for the family picture, but once it is taken, we go straight back to squinting.

5. Blue eyes allow for better night vision.

Similarly to being sensitive to daylight, the lack of melanin allows more light to enter our eyes at night, giving us a light advantage at stumbling our way to bed.

6. Blue eyes were the result of a mutation.

Originally, humans were all brown-eyed. Then someone in the Black Sea region from 6,000 to10,000 years ago had a genetic accident at conception that resulted in his eyes being blue. The mutation carried on as several other also had mutations after the Ice Age.

7. The OCA2 gene is responsible for blue eyes.

Also known as oculocutaneous albinism II, this gene is responsible for producing melanosomal transmembrane protein, or the P protein. It is located on chromosome 15. When it is repressed, the person gets blue or green eyes.

8. We don't know what exactly the P protein does.


We do know it is needed for normal pigmentation, but we are not sure how. The best guess is that it is responsible for producing melanin. Strange, how something as simple as eye color isn't completely understood yet.

9. Blue eyes are not controlled by a single recessive gene.


It is a common mistake that people think that blue eyes are recessive. They are really affected by multiple genes that can determine the shade or even make it another color, like green.

10. They were used as a fidelity test.

Many people used to believe that blue-eyed people could only have blue-eyed children, so a baby's eyes were sometimes used as a test to see if a spouse had cheated. It took a little while for science to clear this up.

11. We are more likely to have red eyes in photos.

This is most prevalent when flash is used. More light enters our eyes and our retinas cannot constrict fast enough to prevent it from bouncing back, resulting in the red eye. The red eye function on cameras let out several flashes to help our retinas constrict.

12. Blue-eyed people are better at long-term and strategic thinking.


OK, so the research is still out on this, but there is some evidence linking our big blue eyes to these cognitive bonuses. Obviously, it is still disputed in the biology and psychology communities.

So, did you learn something new? Has your curiosity been piqued? Maybe next time you look at someone's blue eyes you will think a little more than just, "Aren't they pretty." If you have blue eyes, you might find yourself taking a closer look in the mirror at your optical sapphires.

Cover Image Credit: http://www.wallpaperup.com/197553/close-up_eyes_blue_eyes_world_map_eye.html

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20 Small Tattoos With Big Meanings

Tattoos with meaning you can't deny.
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It's tough to find perfect tattoos with meaning. You probably want something permanent on your body to mean something deeply, but how do you choose a tattoo that will still be significant in 5, 10, 15, or 50 years? Over time, tattoos have lost much of their stigma and many people consider them a form of art, but it's still possible to get a tattoo you regret. So here are 20 tattoos where you can't go wrong. Here are 20 small tattoos with big meanings. (But don't blame me if you still have to deal with questions that everyone with a tattoo is tired of hearing!).

SEE RELATED: "Please Stop Asking What My Tattoos Mean"

1. A semi-colon indicates a pause in a sentence but does not end. Sometimes it seems like you may have stopped, but you choose to continue on.



2. "A smooth sea never made a skilled sailor."



3. Top symbol: unclosed delta symbol which represents open to change. Bottom symbol: strategy.



4. "There are nights when the wolves are silent and only the moon howls."



5. Viking symbol meaning "create your own reality."



6.Greek symbol of Inguz: where there's a will, there's a way.

7. Psalm 18:33 "He makes my feet like the feet of a deer; he causes me to stand on the heights."



8. 'Ohm' tattoo that represents 4 different states of consciousness and a world of illusion: waking (jagrat), dreaming (swapna), deep sleep (sushupti), transcendental state (turiya) and world of illusion (maya)



9. Alchemy: symbolizes copper, means love, balance, feminine beauty and artistic creativity.



10. The Greek word “Meraki” means to do something with soul, passion, love and creativity or to put yourself in to whatever you do.



11. Malin (Skövde, Sweden) – you have to face setbacks to be able to go forward.

12. Symbol meaning "thief" from the Hobbit. It was the rune Gandalf etched into Bilbo's door so the dwarves could find his house.



13. “Lux in tenebris” means “light in darkness.”

14. Anchor Tattoo: symbolizing strength & stability, something (or someone) who holds you in place, and provides you the strength to hold on no matter how rough things get.

15."Ad Maiora” is translated literally as “Towards greater things.” It is a formula of greeting used to wish more success in life, career or love.



16. A glyphs means “explore.” It was meant as a reminder for me to never stop exploring.

17. "Aut inveniam viam aut faciam," meaning roughly, "Either I shall find a way, or I will make one."



18. Lotus Flower. It grows in muddy water, and it is this environment that gives forth the flower’s first and most literal meaning: rising and blooming above the murk to achieve enlightenment.

19. The zen (or ensō) circle to me represents enlightenment, the universe & the strength we all have inside of us.

20. Two meanings. The moon affirms life. It looks as if it is constantly changing. Can reminds us of the inconsistency of life. It is also symbolizes the continuous circular nature of time and even karma.


SEE ALSO: Sorry That You're Offended, But I Won't Apologize For My Tattoos


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Can Dying Your Hair With Coffee Ruin Your Lovely Locks?

Watch as I attempt to dye my hair with coffee this time. That's right, coffee.

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The cheap hair saga continues. Last time I tried to skip the salon, I was attempting to bleach my hair with hydrogen peroxide and although there was a (very) slight difference in shades, my hair was parched after the process. If you want to see the results for yourself, you can here. This time, I decided to go in the opposite direction. I wanted darker, richer hair that wouldn't make my split ends any worse than they already were.

I had the idea one night when I was standing in front of the washing machine, trying to rub a coffee stain from my morning espresso out of my new white tee shirt. I had already been considering doing something to my hair for a week or so and then I thought, "I wonder if coffee could stain your hair too." So instead of running to CVS for at home hair dye, I ran straight to google to see if coffee hair dye was possible. It turns out, the drink you enjoy every morning can also give you rich coffee hair… apparently.

Without hesitation (or really any research), I jumped right in with the first instructions I found. At first glance, you might think this would be harmless endeavor. My hair is already brown, it's just coffee, seriously what could go wrong?

Well, let's watch.

Let's Break down a few things.

Before this process, I had no idea that I should be taking the chemical ingredients of coffee into consideration before I rubbed the mixture into my scalp. Aka the CAFFEINE. That's essentially all coffee is, liquid caffeine. Pardon me for thinking your skin could be a protective layer against getting contact high. Turns out, if you let coffee soak into your skin, the caffeine will have the same effect on you as if you drank it, it could even have an increased effect because your body isn't metabolizing it. As you saw, I LET THE COFEE SOAK INTO MY BRAIN FOR A WHOLE HOUR.

The effects? I laid in my bed all night with my eyes open, debating on whether or not I should just start my day at 3 a.m. because I had this undying urge to be productive. I showed up to work earlier than normal and was hyper all day long. It literally felt like I was screaming at people when I tried to hold a conversation. I'm not exaggerating when I say that I hardly got any sleep ALL week and I genuinely think it was because of the coffee in my hair.

If you are prepping for an all-nighter I definitely recommend this technique. It probably won't do much to your hair but it will definitely have an effect on your week. But if you are only trying to make your hair darker, try at your own risk, I will not be held liable for your peers' concern for your well-being.

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