The Millennium Matters - Society for Interdisciplinary Studies - The oldest and most up to date society for catastrophist information and research. Catastrophism - A page describing the field, supported by a good amount of material. Catastrophism: The emerging science of origins - Another very dense site, describing the many facets of catastrophism with supporting material. Comets, Culture, & Currency - A page describing the specifics of a potential life destroying comet. Ignatius Donnelly and the End of the World - A site that examines the complicated paths towards the final destruction. Very large site with interesting and diverse subject matter.