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简介：NationalGeographicassessesthecontendersfortheworstnaturaldisastersofalltimethoseeventsthathadsevereimpactonhumanpopulations.Aswellasexaminingthedeadliest,wewillalsoexplorethemostpowerful,themostwidereachingandepochchangingevents.Weexplainhowtheyoccurred,whytheycreatedsuchmayhemandexplainwhatmakesthemqualifyasoneofourTopTen.…