Learn more

By Letícia Klein/Ambiental Media TAPAJÓS NATIONAL FOREST, Brazil We have to walk fast inside the forest to keep up with the scientists and their local guides. Its the dry season, and the heat in the Amazon Rainforest is suffocating. An hour and a half later, after going up and down several slopes, some so steep that a helping hand is needed from the colleague ahead, we arrive at the stream. Relief. The pure and crystal-clear water of this small river branch isnt just perfect for quenching our thirst after the walk; its the very subject of the scientists research. In Brazils Tapajós Nati