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Wally Covington (right) and a colleague measure the diameter of a tree in an experimental forest near Flagstaff. After thinning the plot, the tree’s growth rate increased markedly almost immediately.

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Saving the pine forest

Wally Covington has shaped the debate and befuddled critics with woodsy charm and the tenacity of a badger

Wally Covington, who has spent a quarter century reshaping the debate about forest management, leaned forward excitedly across the boundary between his biggest disappointment and his dearest hope.

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