Nature is fragile, environmentalists tell us. The truth is far more worrying. She is strong and packs a serious counter-punch. And, it could be on the way. This is the story that scientists are scared to tell us, because they fear they won't be believed. Man-made global warming is on the verge of unleashing unstoppable planetary forces. Biological and geological monsters are being woken, and they will consume us. The process will not be gradual. New scientific findings about how our planet works show that it does not do gradual change. Under pressure, it lurches into another mode of operation - virtually overnight Nature's revenge will be sudden and brutal, like a climatic tsunami sweeping across the globe. In this impassioned report, Fred Pearce travels the world on the story to end them all. He shares the fears of scientists about a man-made apocalypse within our lifetime. And, he visits the places where the action may start: deep in the Amazon, high in the Arctic, and among the bogs of Siberia. Most troubling, he uncovers the first signs that nature's revenge is already under way.