The footage was filmed by a member of a neighbouring tribal group campaigning to protect the region’s isolated indigenous people.
Archaeologists are discovering that the Amazon region was not a pristine place before European contact.
Parts of the Amazon previously thought to have been almost uninhabited were really home to thriving populations of up to a million people, new research shows.
Big rivers begin as many tiny streams, but figuring out which of those tributaries deserves to be called the source of the river is fraught with difficulties
