Scientists say climate change could cause a ‘massive’ tree die-off in the U.S. Southwest - 72 percent of the U.S. southwest’s needleleaf evergreen forests would “experience mortality by 2050, with nearly 100% mortality of Southwest USA forests by 2100.”

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Scientists say climate change could cause a ‘massive’ tree die-off in the U.S. Southwest - 72 percent of the U.S. southwest’s needleleaf evergreen forests would “experience mortality by 2050, with nearly 100% mortality of Southwest USA forests by 2100.”