A Flood of New, Deadlier Drugs

As America is beginning to wrap its arms around the fentanyl crisis, a new kind of drug epidemic is emerging. It is faster, more addictive, more lethal and powered by synthetic drugs — substances that can be made almost anywhere. Azam Ahmed, an international investigative correspondent, explains how these drugs are beginning to take hold and brings us inside the effort to do something about it. Guest: Azam Ahmed, an international investigative correspondent for The New York Times. Background reading: No pills or needles, just paper: This is how deadly drugs are changing. Fo...