An axe sits on the ground near where men are cutting down a tree in the Monarch butterfly reserve near Ocampo, Mexico, Friday, Oct. 16, 2009. After decades of trying to stop logging in Mexico's Monarch butterfly reserve, biologists and park workers are having to cut down thousands of fir trees themselves, to combat an unprecedented infestation of bark beetles they say may have been unleashed by climate change. (AP Photo/Gregory Bull)
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