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This is CBS I in the world. I'm John Batchwood, Professor Nicholas Thomas, Professor

of Historical Anthropology at Cambridge University. Also, the director of archaeology and Anthropology

Museum at Cambridge is New Book as Voyages. And we plunge into the 19th century and are amazed

that a chief-dance significant that he's a leadership position in the Cook Islands. This

is Polynesia is able to direct a European sailing master without use of European tools.

Now we go back to the beginning beginning, at least until the retreat of the last

ice. This is about 11,000 years ago. And we're not in Polynesia, that's well to the east.

We're not in Melanesia. We're in Formosa, Taiwan now. And the line, the north-south line

called Wallacia. Wallacia, forgive my pronunciation, Professor. What is it that we understand about

the voyages from the mainland into and crossing Wallacia into Melanesia?

There are two stages to this incredible chapter in human history. And it is worth underscoring

just how incredible this story is because otherwise since the beginnings of human history,

since the beginnings of our species, people have been continent-based. So they, of course,

anatomically modern humans evolve in Africa, they settle Europe, Asia and the Americas

by a land bridge. So people get around almost everywhere in the world, on foot through

gradual migrations. But towards the end of the Pleistocene, towards the end of the last

...