[The Washington Post] what pine trees tell us about climate change

Deep in the Sonoran Desert, high on a mountain’s wind-swept peak, there lives a tree known as Bigelow224.With its stout orange trunk and long, graceful needles, the tree looks like any other ponderosa pine growing on Mount Bigelow. But a sliver of its wood, taken amid Earth’s warmest year on record, shows that this tree has a story to tell — and a warning to offer.

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