The authors also give examples of ways humans can change their actions to reduce the rate of global warming, such as relying on energy sources renewable energy sources to reduce fossil fuel emissions. In the novel, the polar ice caps have melted and polar bears have disappeared. This prediction is reasonable; Regions like Greenland are experiencing higher temperatures, causing sea ice to melt at an alarming rate. Without sea ice, polar bears will lose their habitat and become extinct. Although some aspects presented in the novel are hyperbolic, such as the end of civilization in the United States within the next 100 years, the authors manage to persuade readers to recognize the power and intensity of climate change and take action to prevent it from accelerating. at the current rate. The exaggerations used by the authors are what make the story effective in informing and persuading the audience; they are able to exaggerate their ideas in order to emphasize the urgency of change. If the authors had written the book from a current point of view and only presented current facts and events, the reader would not understand the magnitude of the effects that global warming could have on our civilization in the future.