ROSEMONT, Ill.- The first-ever North American Bed Bug Summit, which opened Tuesday near Chicago, attracted a sellout crowd to hear experts on the tiny biters, organizers said. That appears to be one more sign that bed bugs, once almost routed in the United States by pesticides, are back in a big way, the Arlington Heights (Ill.) Daily Herald reported. "Ten years ago we got about one call about bed bugs a year, and now we get at least one call a day," Melaney Arnold, a spokeswoman for the Illinois Department of Public Health, told the newspaper. Organizers of the two-day...