We have non. As Jablonski explained; the existing differences in our skin colors are the evidence of evolution by natural selection. However, they are strictly related to the climate and the amount of UV light, specifically UVB, that determine our skin color. People, who live closer to the Equator, where the concentration of UV light is greatest, developed dark skin to protect from it. UV radiation is damaging to our DNA and results in the development of skin cancer, a disease that can lead to death. The formation of Melanin in our skin as a response to the exposure to the UV light is the protective mechanism. Melanin, while protecting our skin cells is also responsible for the dark pigment of our skin. It is the same mechanism that is released when we go suntanning. The exposure to the UV light causes the skin to release melatonin, giving us the " "golden glow" many of us are after. People, who live in the northern areas of the globe, further from the Equator where the atmosphere is thicker, shielding from the radiation, do not need as much Melanin in their skin. And so, their skin is
We have non. As Jablonski explained; the existing differences in our skin colors are the evidence of evolution by natural selection. However, they are strictly related to the climate and the amount of UV light, specifically UVB, that determine our skin color. People, who live closer to the Equator, where the concentration of UV light is greatest, developed dark skin to protect from it. UV radiation is damaging to our DNA and results in the development of skin cancer, a disease that can lead to death. The formation of Melanin in our skin as a response to the exposure to the UV light is the protective mechanism. Melanin, while protecting our skin cells is also responsible for the dark pigment of our skin. It is the same mechanism that is released when we go suntanning. The exposure to the UV light causes the skin to release melatonin, giving us the " "golden glow" many of us are after. People, who live in the northern areas of the globe, further from the Equator where the atmosphere is thicker, shielding from the radiation, do not need as much Melanin in their skin. And so, their skin is