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Research shows aspen grow much more quickly as carbon dioxide levels rise — so long as they don’t run out of nitrogen. Even so, rising temperaures may be driving aspen out of the lower elevations.

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Tease photo

Tremble of beauty

Efforts to understand the dwindling of the aspen reveal an intricate, endlessly connected natural world

I sit alone among the clones, which loom overhead — quivering weirdly. But I am not scared. Truth be told — I do so love these clones.

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