Existence of Uncontacted Amazon Tribe Confirmed   Live Science - June 25, 2011

Brazilian officials have confirmed the existence of approximately 200 Indians who live in the western Amazon with no contact with the outside world. This uncontacted tribe is not "lost" or unknown, according to tribal advocacy group Survival International. In fact, about 2,000 uncontacted Indians are suspected to live in the Javari Valley where the tribe's homes were seen from the air. But confirming the tribe's existence enables government authorities to monitor the area and protect the tribe's way of life.

Basic understanding of geometry not dependent on education: study   PhysOrg - May 24, 2011
In a recent study published in the Proceedings of the National Academy of Sciences, psychologist Veronique Izard from the Universite Paris Descartes and her colleagues show how abstract geometric principles are understood despite a lack of formal education.

'Time' not necessarily deeply rooted in our brains   PhysOrg - May 21, 2011
Hidden away in the Amazonian rainforest a small tribe called the Amondawa have successfully managed what so many dream of being able to do Š to ignore the pressures of time so successfully that they donÕt even have a word for it.

New images of remote Brazil tribe   BBC - January 31, 2011
New pictures have been released of an isolated tribe living in rainforest on the Brazil-Peru border. Brazil monitors many such tribes from the air, and they are known as "uncontacted" because they have only limited contact dealings with the outside world. Photographs of the same tribe were released to the world two years ago. Campaigners say the Panoan Indians are threatened by a rise in illegal logging on the Peruvian side of the border.

Lost Tribes Used Clever Tricks to Turn Amazon Wasteland to Farms   Wired - April 12, 2010

"Lost" Amazon Complex Found; Shapes Seen by Satellite   National Geographic - January 4, 2010

Ancient Amazon Cities Found; Were Vast Urban Network National Geographic - August 29, 2008
'Lost towns' discovered in Amazon BBC - August 29, 2008

"Uncontacted" Amazon Tribe Actually Known for Decades National Geographic - June 20, 2008
   "Uncontacted" Tribes in Amazon National Geographic - June 7, 2008

Photos Spur Debate On Protecting "Uncontacted" Tribes National Geographic - June 3, 2008

"Uncontacted" Tribe Seen in Amazon National Geographic - May 30, 2008

Amazon Children "Spontaneously" Understand Geometry National Geographic - January 20, 2006
Tests with Amazon villagers hint at innate geometrical sense

Amazon 'stealth' logging revealed BBC - October 21, 2005