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Map of the World by Natural Skin Color

i’m really dumbfounded that i never realized skin colour is literally just caused by being closer to or farther from the equator and the resulting sun exposure and skin darkening

actually, its an adaptation. natural selection. people with darker skin are selected for in areas near the equator, where the melanin that causes the darker color protects them from radiation and protects them from skin cancer and other health defects, and because they are healthier they can pass on that trait more. people near the poles have lighter skin because it allows them absorb more of the limited sunlight to convert to vitamin d. 

THIS IS THE THING SOME PEOPLE HATE OTHER PEOPLE OVER.

Evolution of melanin levels based on geographical location.

Reblogging for the last comment.

second to last comment was dope, and very true.

but for real, is the reason behind skin color really not common knowledge? I mean….

there seems to be some assumption going on that darker skin is the adaptation.

in fact, darker skin is the ‘original flavor’. but evolution likes to get rid of traits that aren’t needed, especially if they cost energy, and maintaining a melanin shield is expensive. we also need sunlight to synthesize vitamin D, and melanin blocks that. so in latitudes that get less sunlight, folks evolved to produce less melanin.

vitamin D deficiency is actually a problem for dark-skinned people living in areas with long, dark winters, btw. take your vitamins!

light-colored eyes are also an adaptation to less sunlight. if real life was like science fiction, blue-eyed people could see in the dark. but reality’s not that cool.

sourcing too much work??????

pimptier:

did u kno DEVIANT ART HAS A FUCKING BUTTON THAT DOES ALL THE SOURCING WORK FOR YOU

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CLICK THE TUMBLR BUTTON (or whatever site you wish to post it to) AND LOOKIE HERE ASSHOLES

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LOOK ALL YOU HAVE TO DO IS PICK WHICH BLOG YOU WANT IT TO GO ON AND CLICK PUBLISH POST YOU CAN EVEN QUE IT IF YOU GO ON ADVANCED POST

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SO IF YOU COMPLAIN THAT SOURCING IS TOO MUCH FUCKING WORK LOOK HERE DEVIANT ART HAS A BUTTON FOR IT YOU FUCKING LAZY CUNT

WAS THAT SO FUCKING HARD 

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