Since lead paint was banned in 1978, the number of children with elevated lead levels has decreased so much that at one point, the Centers for Disease Control and Prevention was confident that this environmental hazard would be eliminated by 2010. However, health officials no longer think they can meet that goal this year because lead hazards are still present in houses built before the lead paint ban, many of which are in “poor urban pockets,” says Mireya Navarro of the New York Times.

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