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thelonelyscarecrow:

castiels-time-traveler:

nintendocanada:

mapsontheweb:

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.

edgebug:

sincerely, a person who has been on prozac for 9 years

this is in response to some shitty stuff i’ve seen on my dash recently. it’s super simplified, so if you’d like to know some more indepth stuff on how exactly it works, google it—OR BETTER YET actually talk to a mental health doctor psychiatrist person wow

x-cetra:

becomming:

xlizardx:

Apparently this is "The clearest photo of Mercury ever taken."

why isnt everyone getting so excited about this, it is literally another planet look at how beautiful it is stop what your doing and look at how alien like this planet is what is living there oh my god mercury

Source: Mercury MESSENGER website (NASA spacecraft currently orbiting and studying the innermost planet)

It’s pretty fricking amazing that we now can send a spacecraft there; Mercury is close to the sun so the radiation would fry most technology.

Note that the saturation of the original photo has been boosted to show minute color variations on the surface.

ETA: HOLY CRAP THIS PHOTO IS EVEN BETTER (CLICK TO ENLARGE — IT IS WORTH IT)

tedx:

At TEDxYouth@Manchester, genetics researcher Dan Davis introduces the audience to compatibility genes — key players in our immune system’s functioning, and the reason why it’s so difficult to transplant organs from person to person: one’s compatibility genes must match another’s for a transplant to take.

To learn more about these fascinating genes, watch the whole talk here»

(Images from Davis’s talk, Drew Berry’s animations, and the TED-Ed lessons A needle in countless haystacks: Finding habitable worlds - Ariel Anbar and How we conquered the deadly smallpox virus - Simona Zompi)

my-stereo-heart-beats-for-you:

viergacht:

karensrnith:

"this baby came out of you but im not 100% sure its yours"

Funny thing - a woman who applied for welfare after her husband left her hadto supply DNA evidence he was actually the father. The results: he was definitely the father, but she wasn’t the mother. Her children were removed from her custody and she was sued for fraud, even though she insisted they were her children. 

Turns out, she wasn’t a surrogate or a kidnapper (the two most obvious explanations) - she was a chimera. As an embryo, she fused at a very early stage with her twin, forming one individual. Her ovaries apparently developed from cells that had originally belonged to her vanished twin. Later on more tests showed that while the woman’s skin and hair DNA did not match her childrens, DNA taken from her cervix did. 

WHAT THE FUCk

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