Advancing the Science of Climate Change (National Research Council) (repost)

Climate change is occurring, is caused largely by human activities, and poses significant risks for–and in many cases is already affecting–a broad range of human and natural systems. The compelling case for these conclusions is provided in Advancing the Science of Climate Change, part of a congressionally requested suite of studies known as America's Climate Choices. While noting that there is always more to learn and that the scientific process is never closed, the book shows that hypotheses about climate change are supported by multiple lines of evidence and have stood firm in the face of serious debate and careful evaluation of alternative explanations.