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Meet California’s Best Big-Tree Hunter

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In 1940, the American Forestry Association launched a campaign to locate the largest specimens of American trees. Since then, big-tree enthusiasts like Californian Carl Casey have been on the lookout for what’s defined as champion trees. In this film from director Brian Kelley, alongside the Gathering Growth Foundation, Casey explains what a champion tree is and some strategies he used to find the world’s largest pine tree.