This podcast episode explores the critical role of the Amazon rainforest as a carbon sink and its vulnerability to deforestation and climate change. It introduces scientist David Lipola, who has dedicated his life to studying and protecting the Amazon, and discusses the potential protective effect of carbon fertilization in helping the forest withstand increased heat and drought. However, uncertainties remain regarding the long-term impact of increased carbon dioxide on the Amazon's carbon uptake. The episode emphasizes the potential collapse of the Amazon as a carbon sink and the need to understand the factors contributing to the decline in carbon absorption.