A new deadly drug called carfentanil is in Santa Clara County, medical experts say. It's a synthetic opioid like fentanyl, but much stronger. On Wednesday, Chief Medical Examiner Dr. Michelle Jordan announced that the county's first overdose death due to carfentanil was reported last week. "Carfentanil is 100 times more potent than fentanyl," Dr. Jordan said. National Fentanyl Awareness Day highlights the dangers of the drug causing a crisis in San Francisco and killing thousands across the country. Last week, a 39-year-old man was found dead with M30 pills, counterfeit pills made to look like prescription oxycodone. "What I'm really...