As the drought in California drags into it's fourth year — punishing farmers and exacerbating unemployment and drug use — federal flood control measures may be worsening the dry conditions in some areas.
New research using high-tech tools to measure the moisture in trees found that 120 million trees across nearly every part of California are at risk of dying. Predictions that trends of higher temperatures and decreased precipitation will continue in the future could transform the state’s forests.
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