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  • Dead trees can be seen in the foreground and on the distant mountain side. (Click on photos for higher resolution.)
    Replanting the Sierra Nevada after an ecological catastrophe

    Oct 25, 2017

  • Trees killed by bark beetles on the Stanislaus National Forest in 1992. (Photo: Jack Kelly Clark)
    Forest and tree health in a time of drought

    Jun 8, 2015

  • Fire trees dying from bark beetle infestations.
    Trees dying due to drought are prone to wildfire

    May 18, 2015

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