The news of a long lost Brazilian tribe that had strayed away from civilization has been found to be a big, fat hoax. The rumor was clarified after an aerial survey of the Amazon was conducted.
JosÃ© Carlos Meirelles, the photographer who claimed to have discovered the tribe explained that authorities have known about this particular tribe since 1910.
The photographer and the agency that released the pictures wanted to make it seem like they were members of a lost tribe in order to call attention to the dangers the logging industry may have on the group.
The photographer recently came clean and most agencies have been real slow to react to the story since. I even saw this on BBC, CNN and nearly all of the biggest and most respected news sites. I am amazed at the power of the net to create disinformation so fast.