The Achuar live in a piece of the Amazon rainforest in South America. Their ancestral territory straddles two countries we'd like you to name. Reporter Andy Isaacson recently traveled to a remote Achuar village to find out more about their way of life.
The answer to today's Geo Quiz is Tristan da Cunha or 'Tristan' for short. Andy Isaacson sends an audio postcard from this island in the South Atlantic. It's been called the most remote inhabited island on Earth.