On his visit to Ethiopia, U.S. President Barack Obama viewed the fossil remains of three famous human ancestors. These included two belonging to the 3 to 3.8 million-year old hominin species Australopithecus afarensis, “Lucy” and “Selam”), as well as “Ardi” from an older species Ardipithecus ramidus. (Click here for a nice overview of our hominin family tree). Later, he said this: 

“When you see our ancestor, 3.5 million years old, we are reminded that Ethiopians, Americans, all the people of the world are part of the same human family, the same chain… And as one of the professors (Zeresenay Alemseged) who was describing the artifacts correctly pointed out, so much of the hardship and conflict and sadness and violence that occurs around the world is because we forget that fact.  We look at superficial differences as opposed to seeing the fundamental connection that we all share.”

I think Obama got it right, which isn’t surprising, since his mother was an anthropologist. Humans everywhere belong to the same species and share common ancestry. We have our differences — some trivial, some significant to us — but our bedrock should be that shared connection. That may be an ideological approach, but the nice thing is that it’s also scientifically accurate. 

President Obama touches the fossilized vertebra of Lucy, an early human ancestor in Ethiopia on Monday. Photograph: Jonathan Ernst/Reuters