About two-thirds of the Amazon lies within Brazil. It remains the world’s largest rainforest, covering an area twice the size of India. The Amazon absorbs large amounts of carbon dioxide, preventing the climate from warming even faster than it would otherwise. It also holds about 20% of the world’s fresh water, and biodiversity that scientists have not yet come close to understanding, including at least 16,000 tree species.

During this same period, deforestation in Brazil´s vast…