Iconic red cedars — known as the “Tree of Life” — and other tree species in the Pacific Northwest have been dying because of climate-induced drought, researchers say. In recent years, at least 15 native tree species in the region have experienced growth declines and die-offs, with 10 linked to drought and warming temperatures, according to recent studies and reports. Many researchers say these drought-driven die-offs are the beginning of a much larger and long-predicted shift in tree growing ranges due to climate change. Trees have growing ranges largely determined by climate factors, namely moisture and temperature.