Deep in the Amazon, sound designer Eric Terena has been capturing the sounds of the rainforest while sitting silently beneath the dense, towering treetops with his recording equipment. He has noticed some huge changes.

“What the environment once spoke, what biodiversity once sang, has shifted to sounds from industrial projects that have arrived in our territories,” said Terena, co-founder of Mídia Indígena, a Brazilian media and communications network which promotes and preserves Indigenous cultures.

His words describe more than a change in sound – they show how nature is gradually being replaced by machines. Ancestral songs have been drowned out by industrial noise. Terena shares these changes using digital tools to bring local stories to global audiences, turning lived experience into climate knowledge.

In our research with Indigenous communities in the Brazilian Amazon, we examine how film and other media technologies, from smartphones to social platforms, are being used to document environmental change, defend land rights and influence climate debates. Together with Indigenous leaders and the Intercultural Faculty in Mato Grosso, Brazil, we explore how “educommunication” – which combines media education with active community participation – can build the technical skills and political capacity that young communicators need to tell their stories to different audiences, from local villagers to global leaders.

As Cop30, the UN climate summit, comes to Brazil this November, our research shows how these digital tools are enabling Indigenous voices to help reshape global understanding of the climate crisis – ensuring their perspectives are present not only in cultural storytelling, but in international environmental decision-making.

This shift didn’t happen overnight. It began with a few voices that grew into a movement. Terena co-founded Mídia Indígena in 2017 at the Free Land Camp, a yearly Indigenous........

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