We know that dinosaurs once walked the Earth in great numbers, and that they all eventually died. What happened to them? This pattern has happened to other species, but is it inevitable, or do we have the power to change the course of events? Is changing habitat a factor? With temperatures and ocean levels rising, and desertification replacing lush forests, will there be any humans in a hundred years? Supporting key Social Studies standards and curriculum, this anthology takes a hard look at the factors contributing to extinctions of plants and animals, with arguments from diverse perspectives.