The conversation between human and AI assistant.
Are the Australian Aboriginals just as dark as Africans because they lived in Africa before they came to Australia?
That's interesting. Can you tell me more about skin color and evolution?
Certainly! Skin color evolved as a way to protect our bodies from harmful UV radiation. People with darker skin have more melanin, which absorbs and disperses UV radiation, protecting the body from damage. People with lighter skin have less melanin, allowing them to absorb more vitamin D from the sun in places with less intense UV radiation. This adaptation occurred independently in different human populations in response to their specific environments.