found: Work cat.: Sorokhtin, O.G. Global warming and global cooling, 2007.
found: Extinctions in the history of life, 2004:p. 144 ( ... global cooling has also been blamed for some events. For example, the cooling effect of volcanic aerosols has been suggested as a contributory cause of the end-Permian mass extinction)
found: Spellman, Frank R. The science of environmental pollution, 1999:p. 180 ( ... little is actually known about the causes of the worldwide global cooling and warming that sent the Earth through the major and smaller Ice Ages)
found: Wikipedia, Jan. 4, 2008(Global cooling in general can refer to a cooling of the Earth)
notfound: McGraw-Hill dict. sci. tech. online;NASA thes.
