The new map confirms that the world's tallest forests are clustered in the Pacific Northwest of North America and some parts of Southeast Asia. Temperate conifer forests--which are moist and harbor species such as Douglas fir, western hemlock, redwoods, and sequoias--have the tallest canopies (over 131 feet high). Undisturbed tropical rain forests are about 82 feet high, around the same height as oak and birch trees.
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