Humans are a roaming species. We've been traveling from continent to continent since our very earliest evolution. In fact, we've been doing it even before we were humans. This week, we're talking with archaeologist Radu Iovita about the ancient silk road, a travel network that was in use tens of thousands of years ago, and we speak with archaeologist Elroy White and anthropologist Alisha Gauvreau about what the oral histories of Indigenous people have to say about North American settlement and how archaeologists are working with First Nations to confirm those histories. REFERENCES Rodriguez A, Yanamandra K, Witek L, Wang...