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Our earliest ancestors ate their food raw — fruit, leaves, maybe some nuts. When they ventured down onto land, they added things like underground tubers, roots and berries.

"You can't have a large brain and big guts at the same time," explains Leslie Aiello, an anthropologist and director of the Wenner-Gren Foundation in New York City, which funds research on evolution. Digestion, she says, was the energy-hog of our primate ancestor's body. The brain was the poor stepsister who got the leftovers.

"What we think is that this dietary change around 2.3 million years ago was one of the major significant factors in the evolution of our own species," Aiello says.

The focus of the scandal is the long-term project for study of the Yanomami of Venezuela organized by James Neel, the human geneticist, in which Napoleon Chagnon, Timothy Asch, and numerous other anthropologists took part. The French anthropologist Jacques Lizot, who also works with the Yanomami but is not part of Neel- Chagnon project, also figures in a different scandalous capacity.

One of Tierney's more startling revelations is that the whole Yanomami project was an outgrowth and continuation of the Atomic Energy Comissions secret program of experiments on human subjects James Neel, the originator and director of the project, was part of the medical and genetic research team attached to the Atomic Energy Commission since the days of the Manhattan Project.

Tierney presents convincing evidence that Neel and Chagnon, on their trip to the Yanomami in 1968, greatly exacerbated, and probably started, the epidemic of measles that killed "hundreds, perhaps thousands" (Tierney's language-the exact figure will never be known) of Yanomami. The epidemic appears to have been caused, or at least worsened and more widely spread, by a campaign of vaccination carried out by the research team, which used a virulent vaccine (Edmonson B) that had been counter-indicated by medical experts for use on isolated populations with no prior exposure to measles exactly the Yanomami situation). Even among populations with prior contact and consequent partial genetic immunity to measles, the vaccine was supposed to be used only with supportive injections of gamma globulin.

Anthro#3, who is interviewed at length, collaborated with the Atomic Energy Commission to introduce smallpox and other diseases so the long-terms effects radiation-like symptoms could be studied.

The prized Inuit cultural value of independence, the lack of a written language, and the harsh reality of surviving in the unforgiving Arctic environment were ill-suited to any centralized political structure.

Increased Political Awareness and Activism In the late 1960s and early 1970s, the increasing numbers of educated Inuit youth returning to their settlements energized the Inuit, particularly with regard to regaining traditional territories with their abundant natural resources. A main focus of the Inuit's emerging political activism was to ensure they would have greater involvement in the decisions surrounding the disposition of the land's resources, particularly in the energy sector, and to obtain a greater measure of economic stability and prosperity through the processing and sale of these resources. Throughout the late 1900s, the Inuit were generally successful in reaching settlements with national governments granting their claims to large expanses of their traditional territory.

Unfortunately, Tierney says, the portrait was inaccurate: "The Yanomami have a low level of homicide by world standards of tribal culture and a very low level by Amazonian standards ... The attempt to portray the Yanomami as archetypes of ferocity would be pathetic were it not for its political consequences." Indeed, the book became anthropology's bestseller, which brought the modern world to the tribe's doorstep. Other anthropologists wanted a piece of the action; filmmakers wanted to document their lifestyle; the Atomic Energy Commission wanted their unique, untainted blood for radiation studies. The Yanomami wanted to be left alone, but no one listened.

In the three decades chronicled in the book, the invading hordes gave them measles and weapons to kill each other, destroyed their homes and damaged their culture beyond repair.