The fate of the Amazon is in jeopardy. Logging, cattle ranching, and soya bean farming are threatening its very existence. But the threat doesn’t end there; carbon dioxide coming from cities thousands of miles away is altering tropical forests and the climate on a much larger scale. In this special edition we travel to Brazil to find out why the fate Amazon is more consequential than ever and meet some of the people fighting to preserve it.

(Claudio da Silva and the Guajajara Guardians of the Forest ride up the Caru River to investigate a report of illegal cutting on Guajajara land. Credit: Sam Eaton/The World)