Animals / Aquariums / Archeology / Insects / Fossils / Zoos

Jun. 06, 1966 - Pictured is a 1:25 scale model of a sodium-cooled nuclear reaction made by the Gesellschaft fuer Kernforschung(GfK) (''The Association for Nuclear Research'') The model is contained in a safety cage. Gorilla plays with her baby. Basel Zoo in Switzerland. (Credit Image: © Keystone Pictures USA/ZUMAPRESS.com)