Yes. We must have descended from darker. The skin pigmentation of humans changed to fit the environment according to sun contact. After Africa broke apart (from the Pangaea theory) and floated away to other regions, it wasn't so sunny anymore like the hot African region we know today. People moved to other lands and skin got lighter due to no use for sun skin protection as a way of adaptation. No wonder so many cases of skin cancer come about these days.

You're probably right. Mankind probably did, at least one time, die out and come back, kinda like a weed! That's where Noah's Ark comes in and the 40 days of rain.

Here you go.

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