Analyse @NatGeoEducation's tweets
@NatGeoEducation
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Sandra Elvin has led several expeditions from spotting polar bears to finding snow leopards. Today on #EverestDay you can hear how she helped organize the most comprehensive scientific expedition to Everest in history. See you at 2PM ET! #ExplorerClassroom https://t.co/MLTFwBkhne https://t.co/rs6MtSE515