The COP30 climate summit will open on November 10 in Belem, a city in Brazil's Amazon, as the rainforest continues to be threatened by deforestation. One reason is the mining of gold – essential for smartphones and computers. Peru is South America's leading producer of the precious metal. With prices reaching record highs, artisanal mines are operating at full capacity, polluting the rainforest in the process. In response, some are now trying to reduce the environmental impact of their activities and offering "clean" gold. FRANCE 24's Agathe Fourcade and Martin Chabal report, with Wassim Cornet.