They hunt with their hands, kill violently with arrows, and have never encountered the modern world. Deep within the Amazonian rainforest, the indigenous Mashco-Piro tribe lives among the forest floor ...

Aerial photos of eastern Brazil show four villages experts believe are inhabited by a previously undiscovered tribe. "The plantation, as well as the huts, are new, dated to a maximum of one year," ...

The American conservationist and author who captured extraordinary footage of an uncontacted Amazon tribe recalled the horrifying moment his guide was shot through the chest with a 7-foot arrow by the ...