The U.S. outlawed lead paint in 1978. Yet it still covers the walls of many older homes, particularly here in the northeast. When that paint chips or peels, it poses a serious danger especially to kids. But in 2005, Rhode Island passed a law requiring some landlords to clean up lead paint. And a group of researchers recently set out to find out if it’s working. Hasbro Children’s Hospital pediatrician and Brown University school of public health associate professor doctor Patrick Vivier is one of those researchers.