This site contains a diverse suite of information about paleoclimates and climate science. An interactive time scale is provided with links to discussions, summaries, references and numerous other web resources concerning past. Artistic renditions, photos and other illustrations support this extensive text. Topics include the science of paleoclimatology, the role of tectonic and eustatic processes on climate, climatic change at the Cretaceous-Tertiary boundary and methods of paleoclimate estimation.