This book describes how Earth's climate is changing, how it has been changing in the recent geological past and how it may change in the future. It covers the physical sciences that build the foundations of our current understanding of global climate change such as radiation, Earth's energy balance, the greenhouse effect and the carbon cycle. Both natural and human causes for climate change are discussed. Impacts of climate change on natural and human systems are summarized. Ethical and economical aspects of human-caused climate change and solutions are presented.

 U.S. History is designed to meet the scope and sequence requirements of most introductory courses. The text provides a balanced approach to U.S. history, considering the people, events, and ideas that have shaped the United States from both the top down (politics, economics, diplomacy) and bottom up (eyewitness accounts, lived experience). U.S. History covers key forces that form the American experience, with particular attention to issues of race, class, and gender.Senior Contributing AuthorsP. Scott Corbett, Ventura CollegeVolker Janssen, California State University, FullertonJohn M. Lund, Keene State CollegeTodd Pfannestiel, Clarion UniversityPaul Vickery, Oral Roberts UniversitySylvie Waskiewicz

By the end of this section, you will be able to:Describe the efforts to reduce the influence of immigrants on American cultureDescribe the evolution of twenty-first-century American attitudes towards same-sex marriageExplain the clash over climate change