Anthony D. Barnosky is a renowned paleoecologist who has studied Earth's ancient past to understand our new future. His warning is stark: Climate change may leave us with a broken world. In 2006, one of the hottest years on record, a "pizzly" was discovered near the top of the world. Half polar bear, half grizzly, this never-before-seen animal might be dismissed as a fluke of nature. Barnosky instead sees it as a harbinger of things to come. In Heatsroke, Barnosky picks up where others leave off, to explore what global warming means for nature itself, for the wild places we love, and for our future. While some species may survive, even thrive, many others are likely to go extinct, with potentially devastating consequesnces. Landscapes and seascapes around the wolds will change, and even today's preserves of wilderness- places that the author calls nature's "defacto museums"- will not survive intact.