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Aspen Trees Dying Off; Scientists Still Don't Have Definitive Reason

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DENVER -- This should be the golden season across the West, when aspen paint hillsides in shades of fall.

But a mysterious ailment -- or perhaps a combination of factors -- is killing hundreds of thousands of acres of the trees from Nevada, New Mexico and Arizona through Utah, Colorado, Wyoming and into Canada, according to the U.S. government and independent scientists.

Read the whole story at Wall Street Journal

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