Climate: Bark beetles invading high-elevation forests » 800px-whitebark_pine_group

Whitebark pines are in imminent danger of extinction, and global warming is one of the most significant threats to the species. Photo courtesy U.S. Forest Service.

Whitebark pines are in imminent danger of extinction, and global warming is one of the most significant threats to the species. Photo courtesy U.S. Forest Service.

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