In the 18 days since Robert F. Kennedy Jr. was sworn in as secretary of the United States Department of Health and Human Services, his department has postponed or canceled two major vaccine advisory committee meetings,

Forensic pathologist Dr. Michael Baden shared his theory on the "unusual" circumstances that may have led to the deaths of Gene Hackman, his wife Betsy Arakawa and their dog.

Robert F. Kennedy Jr., a longtime vaccine skeptic, seemingly reversed course and touted benefits of MMR vaccine amid deadly Texas measles outbreak.