Surprising Recovery of Red Spruce Shows Value of Clean Air Act

ENN
Jun 5, 2018, 4:51 pm53 pts
Since the 1960s, scientists at the University of Vermont have been documenting the decline of red spruce trees, casualties of the damage caused by acid rain on northeastern forests. But now, surprising new research shows that red spruce are making a comeback—and that a combination of reduced pollution…

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