A former medical researcher for the CDC, Dr. William Thompson, has recently admitted to committing fraud by omitting crucial data from a leading study on the link between autism and the MMR vaccine. This is adding fire to a long standing debate about a connection between autism and vaccines. One of the ingredients often cited at the center of the controversy, Thimerosal or Mercury, is commonly used in vaccines as a preservative. The FDA claims they're working with "vaccine manufacturers to reduce or eliminate thimerosal from vaccines." Joining me now is retired professor of chemistry Boyd Haley from the University of Kentucky, one of the world's leading experts in the study of the role of Thimerosal, and how it affects the human body. We'll discuss Thimerosal, autism, and the current controversy at the CDC.