Amazon Tribes: Isolated by Choice?

No one knows precisely how many people live in isolation from the industrial-technological world. Many of these people, perhaps thousands, are believed to thrive in the remote stretches of the Amazon River Basin of South America. Anthropologists and indigenous rights groups say evidence for the existence of these remote tribes is heard in stories of contact with other indigenous groups, deduced from abandoned dwellings, and seen by developers planning to extract resources from the forests.