Hidden tribes make an esoteric subject for films. But, this one was for real — one that did not quite make news. A man belonging to the only uncontacted tribe in South America outside the Amazon basin has been sighted near a region targetted for deforestation by Brazilian cattle-ranchers. When spotted, the man hid behind a tree, and later fled. The next day an abandoned camp, a clay dish, and game ready for cooking were found nearby. The man, according to Survival International, is one of an...