URU-EU-WAU-WAU TERRITORY, Brazil: Visitors to the Uru-Eu-Wau-Wau, an indigenous tribe living deep in Brazil's Amazon rainforest, must first request permission by email, which is printed out and hand-delivered to local leaders. Yet while just one of the tribe's nine villages is connected to the outside world via precarious radio-based WiFi, other technology is being deployed to protect their remote forests from invaders.
Nowadays, the hum of an aerial drone can be heard among the birdsong and distant roar of the Jamari River where the Uru-Eu-Wau-Wau catch fish.