Adapt, or face extinction. The golden toad used to inhabit the cloud forests of Costa Rica, but when the weather became too warm and dried up the pools where its eggs hatched, the golden toad disappeared. It has not been seen in more than twenty years. This amphibian is just one of several species in A Warmer World, a thought-provoking and informative account of how global climate change has affected wildlife over the past several decades. Species by species, acclaimed nonfiction children's author Caroline Arnold describes how warmer weather alters ecosystems, forcing animals to adapt or become extinct. Arnold's clear and straightforward text is complemented by Jamie Hogan's collage-style illustrations. Reminiscent of a nature journal, the book will inspire readers to start their own research into this significant global issue. A glossary and listing of websites and books for further exploration is included.