Bill Nye“The Science Guy” took to TikTok to break down the reasoning behind different skin colors and how all human beings are the same.
Showing a map that depicts the intensity of UV light across the globe, he said, “It turns out the closer you are to the equator, the more intense the ultraviolet light is.” He went on to explain, “It turns out that everybody on earth is descended from people who lived here, in Africa,” while noting that as people migrated away, the amount of UV light they were receiving lessoned.
“Our skin is where we make vitamin D; if you don’t get enough ultraviolet, then you don’t get enough vitamin D,” he said. “But if you get too much ultraviolet, then you break down your folates. You have to have it in perfect balance. And because the ultraviolet varies, the color of our skin varies.”
In conclusion, he said: “But we’re all one species. But we’re not treating each other fairly. Not everybody is getting an even shake, so it’s time to change things.”