Like lice, bedbugs are making an unwelcome comeback. For most of the twentieth century they were virtually extinct in most of Europe and America thanks to the rise of modern insecticides, but in recent years they have been vigorously rebounding. No one is sure why. It may have something to do with more international travel—people bringing them home in their suitcases and so on—or that they are developing greater resistance to the things we spray at them. Whatever it is, they are suddenly being noticed again. “Some of the best hotels in New York have them,” the New York Times quoted one expert
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