Front Matter -- Foreword -- Acknowledgments -- Contents -- Summary -- 1 Climate, Climate Forcings, Climate Sensitivity, and Transient Climate Change -- 2 Natural Climatic Variations -- 3 Human Caused Forcings -- 4 Climate System Models -- 5 Observed Climate Change During the Industrial Era -- 6 Future Climate Change -- 7 Assessing Progress in Climate Science -- A Letter from the White House -- B Biographical Sketches of Committee Members and Staff.