The Washington Post recently reported that Pfizer buried data that one of their drugs, Enbrel (etanercept), might prevent Alzheimer’s disease. While some researchers expressed outrage over this decision, others argued Pfizer's findings were barely worth talking about. We speak to Hank Greely, a Stanford law professor about whether pharma has a moral obligation to share research findings with the public, plus what you should know when sharing your genetic data with testing companies.