Once cut off in Brazil’s Javari valley, communities are increasingly turning to the trappings of the outside world – from the internet to solar power and biscuits – with as yet unknown effects on their health, culture and future

Read more on this story: ‘A computer, a radio, a drone and a shotgun’: how missionaries are reaching out to Brazil’s isolated peoples

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uxu wants a metal cooking pot big enough to hold a whole monkey. Not long ago, his people, the Korubo, cooked meals in ceramic cauldrons made in the forest. But lightweight metal pots brought by “white people” have proved irresistible.

Xuxu says he first became aware of the existence of Tabatinga, a municipality in the state of Amazonas, Brazil, when he visited for a snakebite, moving an armband on his powerful right biceps to show where the serpent got him. The second time, he accompanied a sick grandchild.