The world's largest wetland, known as the Pantanal, in South America is at risk of collapse due to a series of local and seemingly minor decisions that fail to account for their cumulative impact on one of Earth's most biodiverse ecosystems, according to a letter published in BioScience. Authors of the letter titled, "The tragedy of the commons: How subtle and 'legal' decisions threaten one of the largest wetlands in the world," include scientists from Panthera, the global wild cat conservation organization, Embrapa Pantanal, IPÊ, Smithsonian Conservation Biology Institute and CENAP/ICMBio.