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This July 11, 2017, photo shows gnarled, bristlecone pine trees in the White Mountains in east of Bishop, Calif. Limber pine is beginning to colonize areas of the Great Basin once dominated by bristlecones. The bristlecone pine, a wind-beaten tree famous for its gnarly limbs and having the longest lifespan on Earth, is losing a race to the top of mountains throughout the Western United States, putting future generations in peril, researchers said Wednesday, Sept. 13. (Photo by Scott Smith/AP Photo)
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