lost Amazon tribe

http://news.aol.com/story/_a/story-behind-lost-tribe-photos-revealed/20080622183409990001?icid=100214839x1204400626x1200205084

The are probably aware, like the amish, but choose not to care.

Originally posted by Symmetric Chaos
We haven't met them yet. How can you knows these things about them?

True, but from the pictures there is obviously no sort of commercial infrastructure as we know it, but what do we actually know about them? You have a good point.

Originally posted by WrathfulDwarf
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I assume they're killing them out of some ass-backwards superstition or possibly to keep the tribe numbers low for purposes of food/land.

But why bury them alive?