(June 22, 2018 at 5:25 am)Mathilda Wrote: White skin colour is better suited for colder climates where there is less risk of sun cancer but a greater risk of Vitamin D deficiency.
Sun cancer isn't a thing. Do you mean skin cancer?
Also, a recent (a couple years ago) study was done that found that two solutions seemed to evolve to solve the vitamin D deficiency problem: lightening skin and the ability to digest milk.
The same study also shows that in areas of Europe such as Spain and Hungary, dark(er) skin was predominate as recently as 8,000 years ago so the evolution of lighter skin isn't quite as simple as "it lightened progressively the further north humans ranged." It is true that humans in the far north evolved lighter skin to promote better vitamin D synthesis, but it also seems to be the case that Europe only "lightened" to what we call "white skin" now by interbreeding with these very fair far-northerners. Otherwise, Europe was a very mixed bag of skin tones until fairly (no pun intended) recently.
http://www.sciencemag.org/news/2015/04/h...white-skin
Teenaged X-Files obsession + Bermuda Triangle episode + Self-led school research project = Atheist.
