*applies for architecture job*
experience: building houses on the sims since 2001
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.
And, it’s not just skin color. Hair type, height, and body structure is also affected by ancestral climate. In general, the curly and lightness of afro textured hair helps keep the body and head cool in hot temperatures, and straight hair is better for colder. Shorter, stockier people like ancestral Europeans are better in cold, and taller people like ancestral Africans are better in hot.
Of course, we’re all mixing together, so a bunch of this is just turning into mishmashes of genetics.
Hooray for anthropology!!!
I get back to Tumblr and Youtube after a 40-day siesta to find that Hannah Hart is all of a sudden blond, and Grace Helbig is all of a sudden not blond.
What the heck happened during those 40 days??
(I’m sure there are more important questions in the world, but this is just the one I’m currently most confused about)
So I heard it’s Earth Day
April 16th, 2014