and "The practice of hydraulic fracturing - better known as fracking - has become a prominent issue as countries such as the United States strive for energy independence. What is fracking, and why is it such a controversial topic? Readers discover the answers to these questions and more through balanced text that presents multiple viewpoints about fracking. Fact boxes and graphic organizers provide additional information, and full-color photographs help readers better understand how fracking works and its effects on the environment. As readers explore this current events issue, they're also introduced to important information about natural resources, fossil fuels, and alternative energy sources and " -