EntityQ18393516· pop 5· linked from 41 articlesrare eventSign in to saveevent that occurs with low frequency, often with a widespread effect which might destabilize systemsConnectionsclimate changeEntitywarEntityvolcanoEntityterrorismEntityInternational Standard Book NumberEntityinfluenzaEntitycholeraEntitypoliomyelitisEntitydigital object identifierEntityInternational Standard Serial NumberEntityyellow feverEntityriskEntitystandard deviationEntityQ180686EntityJSTOROrganizationbibcodeEntityQ118398EntityQ229883EntityScientific AmericanEntityNational Oceanic and Atmospheric AdministrationEntityCategoriesComplex systems theoryStatistical forecasting