"for the next century could raise the world's temperature some 4degC (7.2degF), bringing serious coastal flooding and other damage." The Conservation Foundation urged renewed funding for Keeling's CO 2 project and pressed the National Academy of Sciences to pay attention to the subject. From then on, awareness of climate change ascended right along with the Keeling Curve. In 1971 Barry Commoner's environmentalist bestseller, The Closing Circle, gave an early public warning about greenhouse gases. In 1978 a young congressman from Tennessee, Albert Gore, held hearings on global warming, starring his Harvard teacher Roger Revelle, who had sponsored the Keeling CO 2 research"