In this photo taken on April 18, 2014, educator Pam Cheever holds a serviceberry seedling, one of about 10,000 seedling trees distributed by the Papio-Missouri River Natural Resources District to school teachers and youth group leaders in Omaha, Neb. The seedlings are to be given to students to take home for Arbor Day plantings. People across the nation will observe Arbor Day on Friday, but no state will celebrate with as much fervor as Nebraska, where the celebration of trees got its start 142 years ago. (AP Photo/Nati Harnik)
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