More than five million Americans suffer from Alzheimer’s Disease. And according to the Alzheimer’s Association , that number could double in the next two decades as baby boomers age and people live longer. Despite massive research efforts, we still don’t know the root causes of the disease or how to treat it. That’s why local researchers are looking in new directions to solve the mystery of Alzheimer’s, as WKSU’s Jeff St.Clair reports in this week’s Exploradio.