"Unfound" Amazon Tribe Photographed

The photo above, released last week, is of a heretofore "unfound" tribe of Amazon Indians living on the Brazil-Peru border (as if they were ever "lost"). It's incredible to think that there are still communities of people who live in almost absolute isolation and have skipped out on some of humanity's bigger trends of the last few centuries. There are, apparently, 100 such groups. Contacting them raises some interesting questions. Do we owe them any "help"? Do we bear a responsibility to "preserve" their culture? Are their spears poison-tipped?

Via TED. More photos, and a short article, at Reuters.