An aerial view of damage caused by a mountain pine beetle infestation in Montana. A new report by the National Research Council cited climate change as playing a "significant role" in the recent infestations across North America.
Panel Says Global Warming Risks Sudden, Deep Changes
A scientific panel’s report rules out some doomsday notions but says dire climatic surprises seem inevitable.
Continued global warming poses a risk of rapid, drastic changes in some human and natural systems, a scientific panel warned Tuesday, citing the possible collapse of polar sea ice, the potential for a mass extinction of plant and animal life and the threat of immense dead zones in the ocean.
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