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History and Science in a Tree Ring: Park Williams

Park Williams studies trees and climate, in particular the causes of drought and the effects of climate change on forests. An assistant research professor at the Lamont-Doherty Earth Observatory, he travels all over—across the western United States, to the Ozark Mountains, to Ethiopia—and drills into trees to discover their past. Using tree rings and other data, he maps out past climate and the trees’ responses. Some of his recent work helped establish the connection between warming climate and the increase in wildfires out West. In this latest in a series of Earth Institute videos, we spoke to him about what he does, what’s important about it, and how his interest in history and environmental science blended into a career. (Video production by the Columbia News video team.)