Eight Cornell students climbed more than 280 feet high into the canopies of giant sequoia trees during the first "Redwoods Tree Climbing" course offered by Cornell Outdoor Education, May 22-29. The focus of the course was to teach students how to safely climb into tree canopies and contribute to ongoing research in the old growth giant sequoia forests of the Sierra Nevada. Four in the group were the first ever to climb one particular giant sequoia -- 260 feet tall -- one of the world's tallest trees.