"As culture changes, it affects our brains, and as our brains change, that affects our culture. You can't separate the two," Berns says. "We now have the means to start understanding this relationship, and that's putting the relatively new field of cultural neuroscience onto the global stage."
Future conflicts over politics and religion will likely play out biologically, Berns says. Some cultures will choose to change their biology, and in the process, change their culture, he notes. He cites the battles over women's reproductive rights and gay marriage as ongoing examples.