What we are learning about Parkinson's Disease

What is the future of new treatments? What are researchers focusing on and what are they learning about what triggers Parkinson's Disease? We talk to one of the leading scientists studying the disease, Dr. Jeff Bronstein of UCLA, about the big breakthroughs in learning what increases a person's risk to PD. We also talk to a researcher from USC about what people can do to in fighting Parkinson's.