In a world that is slowly warming, the lives of plants and animals are at risk. Some, like the polar bear, are in danger of extinction because their Arctic ecosystem is melting. Others, like the golden toad, have already gone extinct. This books cites the Industrial Revolution and human-created greenhouse gases as causing a significant increase in global temperatures, which has adversely affected animals and plants. By understanding the differences between endangered and threatened species and the threats posed to various habitats, readers will form a new appreciation of conservation efforts and may be inspired to become environmental activists themselves.