How We the People screwed the Indians: part three

To attract followers after each campaign, Genghis Khan ordered feasts in each khanate he conquered. An apex predator he lives large in human history and has 16 million descendants who include the Uyghurs. Food and reproduction drove his legacy that took 30 million lives:

"This is a clear example that culture plays a very big role in patterns of genetic variation and diversity in human populations," said geneticist Spencer Wells, one of the 23 co-authors of the paper. "It's the first documented case when human culture has caused a single genetic lineage to increase to such an enormous extent in just a few hundred years."

From PRI's The World:

This growing unease about immigrants raises a deeper question about such attitudes: Is it human nature to distrust those who come from outside our own community? When two groups of chimps bump into each other in the forest, it always leads to conflict. Males threaten each other with loud calls and aggressive gestures. And, occasionally, things escalate to physical violence and warfare. Primatologist Frans de Waal of Emory University has studied what happens when two groups of bonobos encounter each other. “They have initial hostility, but then they have sex, and they groom, and very soon it looks more like a picnic than like warfare between them,” says de Waal.

h/t hipneck: