MORE ON BEDBUGS: “Until it was banned in 1972, the pesticide DDT helped keep bedbugs in check. Increased international travel and other modern phenomena have contributed to a resurgence of the apple-seed-size insects, which feed on human blood. Outbreaks have hit several U.S. cities. In New York, stores including Niketown and Victoria’s Secret have closed temporarily because of infestations. The pests are now attracting attention from scientists and entrepreneurs. On Sept. 21 and 22, the experts showed off their anti-insect weapons at the first-ever North American BedBug Summit in Chicago.”