The amphibians (frogs, salamanders, caecilians...) are the most endangered group of animals on the planet. Everything seems to be against their survival: their habitats have been reduced and deteriorated by the advance of agriculture, the logging industry or human infrastructure. In the past two decades, a series of pathogens have decimated them. And so far this century, climate change threatens to put an end to them. A report in which more than a hundred scientists have participated, with data from another 900 from around the world, concludes that we must hurry if we want to save them.