Word: tetons
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Dates: during 1970-1979
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...shift was partly brought about by the mountain pine beetle, which is destroying lodgepole pines in unprecedented numbers in the Wyoming-Idaho-Montana area that includes Yellowstone National Park (now celebrating its 100th year), Grand Teton National Park, Teton National Forest and Targhee National Forest. In Targhee, the Forest Service waged a $9,000,000, six-year battle against the pest-and lost. Chemical sprays did kill the beetles, but at an estimated cost of $4 per tree the battle became uneconomical. In a forest that once contained 3 billion board feet of timber, only half now remains; the value...