Need to Know, July 8, 2011: Congo’s orchestra, Dominique Strauss-Kahn, Sudan, workplace safety

Summary: The story of a remarkable symphony orchestra thriving in Congo, and an investigation on faltering safety in work sites that are exempt from OSHA regulations. Also: South Sudan's historic election and Jami Floyd on the Dominique Strauss-Kahn case. Maria Hinojosa guest hosts.