Table of Contents “...Note continued: Earth's Short-Term Climate History -- Mechanisms of Natural Climate Fluctuation -- Solar Variability -- Earth's Orbital Cycles -- Continental Position and Topography -- Atmospheric Gases and Aerosols -- Climate Feedbacks and the Carbon Budget -- Earth's Carbon Budget -- Water-Vapor Feedback -- Carbon -- Climate Feedbacks -- CO2 -- Weathering Feedback -- Evidence for Present Climate Change -- Temperature -- Ice Melt -- Sea-Level Rise -- Extreme Events -- Causes of Present Climate Change -- Contributions of Greenhouse Gases -- Sources of Radiative Forcing -- Scientific Consensus -- Climate Models and Forecasts -- Radiative Forcing Scenarios -- Future Temperature Scenarios -- Sea-Level Projections -- The Path Ahead -- Taking a Position on Climate Change -- Action Now Means "No Regrets" -- Mitigating Climate Change: What Can You Do? ...”