A scientist at the University of New Orleans says she has new information about the impact of the BP oil spill on humans.
Dr. Patricia Williams says the people who cleaned tar from the beaches are especially at risk.
They were a constant presence on Gulf Coast beaches. Hundreds of workers picked up thousands of tar balls for weeks, during and after the Macondo well blew out in the Gulf of Mexico, along miles of impacted coast. And now there’s cause for concern.