Photograph by Sarah Leen for National Geographic

Photograph by Sarah Leen for National Geographic

 

 

A scientist argues that once we were all white; then we were all black; then some of us went back to white.

 

 

Photograph by Sarah Leen for National Geographic

Photograph by Sarah Leen for National Geographic

 

 

If there is a contribution to transformation, then this.

Read in full.

 

 

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