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Mar 23, 2019, 8:00 am376 pts
EcoWatch
By Marlene Cimons Neil Pederson's introduction to tree rings came from a "sweet and kindly" college instructor, who nevertheless was "one of the most boring professors I'd ever experienced," Pederson said. "I swore tree rings off then and there." But they kept coming back to haunt him. As a future forest…
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