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They’re Among the World’s Oldest Living Things. The Climate Crisis Is Killing Them.

They’re Among the World’s Oldest Living Things. The Climate Crisis Is Killing Them.
Sequoia Crest, Calif. — Until a few years ago, about the only thing that killed an old-growth giant sequoia was old age. Not only are they the biggest of the world’s trees, by volume — the General Sherman Tree, considered the largest, is 36 feet in diameter at its base and 275 feet tall — they are among the oldest. At least one fallen giant sequoia was estimated to have been more than 3,200 years old. They last so long that, historically, only one or two of every thousand old-growth trees dies annually, according to Nate Stephenson, a research ecologist for the United States Geological Survey. Fire always was a frequent visitor to sequoia groves, but rarely a threat. Mature sequoias are virtually fireproof because the bark can be several feet thick. Until now. Dr. “I could go, ‘Oh, there’s a fir needle, that’s incense cedar, that’s oak, that’s a pine,’” Dr. Intense fires engulfed the giant sequoia groves, killing trees. S.Q.F. In all, thousands of trees died in groves damaged by fire. Dr.

https://www.nytimes.com/interactive/2020/12/09/climate/redwood-sequoia-tree-fire.html

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