Tree deaths soar in Western U.S.
Thanks to Edmund Levering for this article.
Tree deaths, spurred by global warming, have more than doubled in older forests across Western states, federal scientists reported Thursday.
Droughts and pests brought on by warmer temperatures have killed firs, hemlocks, pines and other large trees in particular over the past 30 years without allowing replacements to sprout, the study published in the journal Science finds.
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