Warming Endangers a Crucial Yellowstone Tree

Daily Climate: If you've hiked in the Northern Rockies above 9,000 feet, you've hiked among a whitebark pine forest. And if you've hiked in the Rockies since 2009, you've likely hiked through a dead and dying forest, felled by a widespread outbreak of the mountain pine beetle. Whitebark pine trees throughout the greater Yellowstone ecosystem are dying, succumbing to a combination of blister rust, beetle infestation and warmer temperatures. At a scientific conference Tuesday at Mammoth Hot Springs, near......

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